With the deployment of ultra-dense low earth orbit(LEO)satellite constellations,LEO satellite access network(LEO-SAN)is envisioned to achieve global Internet coverage.Meanwhile,the civil aviation communications have i...With the deployment of ultra-dense low earth orbit(LEO)satellite constellations,LEO satellite access network(LEO-SAN)is envisioned to achieve global Internet coverage.Meanwhile,the civil aviation communications have increased dramatically,especially for providing airborne Internet services.However,due to dynamic service demands and onboard LEO resources over time and space,it poses huge challenges in satellite-aircraft access and service management in ultra-dense LEO satellite networks(UDLSN).In this paper,we propose a deep reinforcement learning-based approach for ultra-dense LEO satellite-aircraft access and service management.Firstly,we develop an airborne Internet architecture based on UDLSN and design a management mechanism including medium earth orbit satellites to guarantee lightweight management.Secondly,considering latency-sensitive and latency-tolerant services,we formulate the problem of satellite-aircraft access and service management for civil aviation to ensure service continuity.Finally,we propose a proximal policy optimization-based access and service management algorithm to solve the formulated problem.Simulation results demonstrate the convergence and effectiveness of the proposed algorithm with satisfying the service continuity when applying to the UDLSN.展开更多
The integration of Communicative Language Testing(CLT)principles with AI-driven automated assessment poses a significant challenge in professional language testing.Addressing this issue within the specific context of ...The integration of Communicative Language Testing(CLT)principles with AI-driven automated assessment poses a significant challenge in professional language testing.Addressing this issue within the specific context of Civil Aviation Ground Service English,this study explores pathways for their logical reconciliation.Through conceptual analysis and theoretical deduction,with a focus on human-AI interaction scenarios,we demonstrate that the synergy between CLT and AI stems from a shared focus on competency measurement.Key findings reveal that:(1)standardized competency dimensions in CLT can be operationalized into data-processable formats for AI;(2)within professional contexts,AI algorithms can be tailored using authentic service corpora to meet CLT’s demand for situational authenticity;and(3)a division of labor based on competency level-where AI handles standardized scoring of lower-order competencies and human-AI collaboration assesses higher-order competencies-effectively resolves the tension between CLT’s dynamic communication and AI’s static algorithms.Ultimately,the study constructs a three-dimensional integration framework encompassing“professional register,”“competency level,”and“human-AI division of labor,”offering a theoretical model for CLT-AI integration and a practical blueprint for innovating Civil Aviation Ground Service English assessment.展开更多
Based on data collected by Chinese Civil Aviation Statistic Center, the annual CO2 emissions of aircrafts during 1960-2009 were calculated, and the emission intensity and its dynamic characteristics were analyzed. The...Based on data collected by Chinese Civil Aviation Statistic Center, the annual CO2 emissions of aircrafts during 1960-2009 were calculated, and the emission intensity and its dynamic characteristics were analyzed. The results show that the total CO2 emissions of aircrafts in China increased from 120×10^3 t in 1960 to 41.44×10^6 t in 2009. The CO2 emission intensity decreased from 2.9 kg （converted t kra）-1 in 1960 to 0.96 kg （converted t km）-1 in 2009 at an average rate of 0.04 kg （converted t km）-I per year. The average share of CO2 emissions of aircrafts on the total CO2 emissions from the sector of transportation, storage and post was 6.6% during 1980-2005, and 0.25% on the total emissions from fossil fuel combustion during 1971-2008.展开更多
The International Civil Aviation Organization （ICAO） is a specialized agency of the United Nations. Functionally, it has emerged as the organizational necessity of both the universal complex structure and the import...The International Civil Aviation Organization （ICAO） is a specialized agency of the United Nations. Functionally, it has emerged as the organizational necessity of both the universal complex structure and the importance of its overall activity. It was created on the basis of Article 57 of the United Nations Charter, stipulating that the specialized UN agencies are autonomous international organizations. They enjoy their autonomy on the basis of the contract they were established by, being engaged in activities within the United Nations system. On the territories the organization member states comprise, they enjoy privileges and immunities, having the international legal capacity to carry out their activities in accordance to the Statute. The 1944 Multilateral Convention was to establish both protection and efficient development of international civil aviation. In accordance to that rights and obligations of member states were established. It is of a special importance to emphasize obligation of parties to take their parts in both co-operation and programs aimed at improvement of international transport, navigational equipment, and installations. In the globalized world of today, air traffic is an irreplaceable part of the system of communication. It enables fast and timely business contacts between the people from various continents, as well as transport of goods.展开更多
The civil aviation industry, with the key role of promoting hitech development, enhancing national strength, providing work opportunities, and guaranteeing aviation safety, is regarded as one of the leading hi-tech in...The civil aviation industry, with the key role of promoting hitech development, enhancing national strength, providing work opportunities, and guaranteeing aviation safety, is regarded as one of the leading hi-tech industries in the industrialized world, and civil aircraft are the industry’s basic products, which are value-added, andpromote the production of their展开更多
In order to promote the application and development of civil aviation safety(CAS)in the field of safety and enrich the theoretical system of CAS research,the methodology of CAS was studied.The definition of CAS was re...In order to promote the application and development of civil aviation safety(CAS)in the field of safety and enrich the theoretical system of CAS research,the methodology of CAS was studied.The definition of CAS was reconstructed,its connotation was explained from four aspects,and its research object was clarified.This paper discussed the mechanism of CAS,that is,to maintain system security through the establishment of safety prevention and control system(SPCS),and explained the research content of CAS from theory and technology application.Five principles and applicable methods for CAS research were summarized.In addition,it put forward the general procedure of CAS research,explained the specific content and implementation method or basis of each step.The research results show that the methodology of CAS is a systematic theoretical system with certain guiding significance,combined with the mechanism,research content,research principles and methods,and research procedures of CAS.展开更多
Early in 1979,China beganconsidering the drawing up of alaw to govern and standardize theactivities of its civil air operations. At that time,air legislation wassomething nonexistent in China.Thedraft team assembled f...Early in 1979,China beganconsidering the drawing up of alaw to govern and standardize theactivities of its civil air operations. At that time,air legislation wassomething nonexistent in China.Thedraft team assembled forces totranslate the air laws of various foreigncountries,including the United States,Britain,Japan and the former SovietUnion,and the relevant internationalconventions,and conducted a deep-going study of them.They also madeinspection tours of the United States,Canada,Britain and Germany.Onthe basis of the study of and withreference to the advanced legislativepractices in foreign countries,thedraft team put forward its first draft ofthe air law in July 1983,in accordancewith the actual conditions of thecountry.It was not,however,submitted to an executive meetingof the State Council for examinationand discussion because a series ofmajor problems such as air trafficcontrol and the control over theairworthiness of aircraft,had to befurther investigated and studied.展开更多
Not long ago, Bao Peide, DeputyDirector-General of the Civil AviationAdminstration of China (CAAC),briefed Chinese and foreign reporters on thegeneral development trend of China’s civilaviation industry.
With the enhancement of our country's comprehensive national strength, the unprecedented development of China's civil aviation provided more professional demand of civil aviation for society and also brought o...With the enhancement of our country's comprehensive national strength, the unprecedented development of China's civil aviation provided more professional demand of civil aviation for society and also brought opportunities for vocational colleges in our country. This paper will takes Civil Aviation English Listening and Speaking course of flight attendants and aviation service majors in Chongqing Hailian Vocational for example. Several suggestions on civil aviation English teaching are put forward simply. It will discuss how to carry on the effective teaching of English curriculum reform.展开更多
The main task of meteorological observation is to release the observed meteorological elements timely and accurately, to ensure the authenticity and reliability of meteorological information, and to ensure the normal ...The main task of meteorological observation is to release the observed meteorological elements timely and accurately, to ensure the authenticity and reliability of meteorological information, and to ensure the normal operation of flights. At present, due to the frequent adjustment of civil aviation meteorological observation standards and related systems, there are many problems in the recording of observation data, resulting in confusion of information. Correctly use the civil aviation meteorological observation equipment, ensure the effective management of the observation data. In order to further play the role of observation equipment, the advantages of computer and internet technology should be brought into play to improve the performance and utilization rate of the equipment.展开更多
Fireworks products are energy-containing materials and are hazardous during production,storage,transportation,and use.By analyzing the range of civil aviation ground ambient temperature and civil aviation cabin ambien...Fireworks products are energy-containing materials and are hazardous during production,storage,transportation,and use.By analyzing the range of civil aviation ground ambient temperature and civil aviation cabin ambient temperature in storage and ground operation as well as establishing a spontaneous combustion mathematical model for cylindrical fireworks products based on the spontaneous combustion theory,we identified the critical temperature for spontaneous combustion of a single spray and analyzed the thermal safety of fireworks products under the civil aviation ambient temperature by example to provide theoretical support for the feasibility study of transporting fireworks products by civil aviation.展开更多
With the improvement of China's economic level, China's aviation industry has developed rapidly, especially China's civil aviation industry has stepped onto a new stage. At civil aviation airports, the pos...With the improvement of China's economic level, China's aviation industry has developed rapidly, especially China's civil aviation industry has stepped onto a new stage. At civil aviation airports, the possibility of collision with birds has increased significantly in recent years, seriously threatening the civil aviation economy and even the safety of pilots and their passengers. On this basis, this paper will develop the ecological research methods and prevention strategies of airport bird status from the following aspects. Based on his long-term experience, the author puts forward some suggestions for reference.展开更多
As an important infrastructure system, civil aviation network system can be severely affected by natural hazards. Although a natural hazard is usually local, its impact, through the network topology, can become global...As an important infrastructure system, civil aviation network system can be severely affected by natural hazards. Although a natural hazard is usually local, its impact, through the network topology, can become global.Inspired by Wilkinson's work in 2012, this article proposes a new quantitative spatial vulnerability model for network systems, which emphasizes the spreading impact of spatially localized hazards on these systems. This model considers hazard location and area covered by a hazard,and spatially spreading impact of the hazard(including direct impact and indirect impact through network topology) and proposes an absolute spatial vulnerability index and a relative spatial vulnerability index to reflect the vulnerability of a network system to local hazards. The model is then applied to study the spatial vulnerability of the Chinese civil aviation network system. The simulation results show that(1) the proposed model is effective and useful to study spatial vulnerability of civil aviation network systems as the results well explain the general situation of the Chinese civil aviation system; and(2) the Chinese civil aviation network system is highly vulnerable to local hazards when indirect impacts through network connections are considered.展开更多
In the process of developing the C919 large aircraft customer service intelligence system,we find that heterogeneous and incomplete data cause the inefficient and inaccurate decision making.Thus,to solve this problem,...In the process of developing the C919 large aircraft customer service intelligence system,we find that heterogeneous and incomplete data cause the inefficient and inaccurate decision making.Thus,to solve this problem,we propose to introduce the idea of ontology modeling and reasoning into competitive intelligence system building in this paper.We first present the building principles and methods of the civil aviation customer service ontology.We then define the classes and properties to contribute a real-world civil aviation customer service ontology,which is published on the Web(http:/www.openkg.cn/dataset/cacso).We finally design SWRL rules corresponding to different intelligence analysis targets to support reasoning in our designed competitive intelligence system.展开更多
基金supported in part by the National Key R&D Program of China under Grant 2020YFB1806104in part by Innovation and Entrepreneurship of Jiangsu Province High-level Talent Program+1 种基金in part by Natural Sciences and Engineering Research Council of Canada (NSERC)the support from Huawei
文摘With the deployment of ultra-dense low earth orbit(LEO)satellite constellations,LEO satellite access network(LEO-SAN)is envisioned to achieve global Internet coverage.Meanwhile,the civil aviation communications have increased dramatically,especially for providing airborne Internet services.However,due to dynamic service demands and onboard LEO resources over time and space,it poses huge challenges in satellite-aircraft access and service management in ultra-dense LEO satellite networks(UDLSN).In this paper,we propose a deep reinforcement learning-based approach for ultra-dense LEO satellite-aircraft access and service management.Firstly,we develop an airborne Internet architecture based on UDLSN and design a management mechanism including medium earth orbit satellites to guarantee lightweight management.Secondly,considering latency-sensitive and latency-tolerant services,we formulate the problem of satellite-aircraft access and service management for civil aviation to ensure service continuity.Finally,we propose a proximal policy optimization-based access and service management algorithm to solve the formulated problem.Simulation results demonstrate the convergence and effectiveness of the proposed algorithm with satisfying the service continuity when applying to the UDLSN.
基金supported by the Vocational Education Research Project from China Commercial Technicians Association:“Research on the Construction and Application of AI-Enabled English Testing System for Civil Aviation Ground Services”(20ZSJYB20250420)the Education Science Planning Projects(Higher Education Special Program)from Guangdong Provincial Department of Education:“Research on the Evaluation System of Digital Competence in Curriculum Ideology and Politics for Higher Vocational Teachers in Guangdong under the Background of Educational Digitalization”(2024GXJK877)“Digital Empowerment for High-Quality Development in Guangdong:An Innovative Study on Cultivating Interdisciplinary Foreign Language Talents”(2023GXJK691).
文摘The integration of Communicative Language Testing(CLT)principles with AI-driven automated assessment poses a significant challenge in professional language testing.Addressing this issue within the specific context of Civil Aviation Ground Service English,this study explores pathways for their logical reconciliation.Through conceptual analysis and theoretical deduction,with a focus on human-AI interaction scenarios,we demonstrate that the synergy between CLT and AI stems from a shared focus on competency measurement.Key findings reveal that:(1)standardized competency dimensions in CLT can be operationalized into data-processable formats for AI;(2)within professional contexts,AI algorithms can be tailored using authentic service corpora to meet CLT’s demand for situational authenticity;and(3)a division of labor based on competency level-where AI handles standardized scoring of lower-order competencies and human-AI collaboration assesses higher-order competencies-effectively resolves the tension between CLT’s dynamic communication and AI’s static algorithms.Ultimately,the study constructs a three-dimensional integration framework encompassing“professional register,”“competency level,”and“human-AI division of labor,”offering a theoretical model for CLT-AI integration and a practical blueprint for innovating Civil Aviation Ground Service English assessment.
基金supported by Climate Change Special Project of China Meteorological Administration (No. CCSF2011-14)
文摘Based on data collected by Chinese Civil Aviation Statistic Center, the annual CO2 emissions of aircrafts during 1960-2009 were calculated, and the emission intensity and its dynamic characteristics were analyzed. The results show that the total CO2 emissions of aircrafts in China increased from 120×10^3 t in 1960 to 41.44×10^6 t in 2009. The CO2 emission intensity decreased from 2.9 kg （converted t kra）-1 in 1960 to 0.96 kg （converted t km）-1 in 2009 at an average rate of 0.04 kg （converted t km）-I per year. The average share of CO2 emissions of aircrafts on the total CO2 emissions from the sector of transportation, storage and post was 6.6% during 1980-2005, and 0.25% on the total emissions from fossil fuel combustion during 1971-2008.
文摘The International Civil Aviation Organization （ICAO） is a specialized agency of the United Nations. Functionally, it has emerged as the organizational necessity of both the universal complex structure and the importance of its overall activity. It was created on the basis of Article 57 of the United Nations Charter, stipulating that the specialized UN agencies are autonomous international organizations. They enjoy their autonomy on the basis of the contract they were established by, being engaged in activities within the United Nations system. On the territories the organization member states comprise, they enjoy privileges and immunities, having the international legal capacity to carry out their activities in accordance to the Statute. The 1944 Multilateral Convention was to establish both protection and efficient development of international civil aviation. In accordance to that rights and obligations of member states were established. It is of a special importance to emphasize obligation of parties to take their parts in both co-operation and programs aimed at improvement of international transport, navigational equipment, and installations. In the globalized world of today, air traffic is an irreplaceable part of the system of communication. It enables fast and timely business contacts between the people from various continents, as well as transport of goods.
文摘The civil aviation industry, with the key role of promoting hitech development, enhancing national strength, providing work opportunities, and guaranteeing aviation safety, is regarded as one of the leading hi-tech industries in the industrialized world, and civil aircraft are the industry’s basic products, which are value-added, andpromote the production of their
文摘In order to promote the application and development of civil aviation safety(CAS)in the field of safety and enrich the theoretical system of CAS research,the methodology of CAS was studied.The definition of CAS was reconstructed,its connotation was explained from four aspects,and its research object was clarified.This paper discussed the mechanism of CAS,that is,to maintain system security through the establishment of safety prevention and control system(SPCS),and explained the research content of CAS from theory and technology application.Five principles and applicable methods for CAS research were summarized.In addition,it put forward the general procedure of CAS research,explained the specific content and implementation method or basis of each step.The research results show that the methodology of CAS is a systematic theoretical system with certain guiding significance,combined with the mechanism,research content,research principles and methods,and research procedures of CAS.
文摘Early in 1979,China beganconsidering the drawing up of alaw to govern and standardize theactivities of its civil air operations. At that time,air legislation wassomething nonexistent in China.Thedraft team assembled forces totranslate the air laws of various foreigncountries,including the United States,Britain,Japan and the former SovietUnion,and the relevant internationalconventions,and conducted a deep-going study of them.They also madeinspection tours of the United States,Canada,Britain and Germany.Onthe basis of the study of and withreference to the advanced legislativepractices in foreign countries,thedraft team put forward its first draft ofthe air law in July 1983,in accordancewith the actual conditions of thecountry.It was not,however,submitted to an executive meetingof the State Council for examinationand discussion because a series ofmajor problems such as air trafficcontrol and the control over theairworthiness of aircraft,had to befurther investigated and studied.
文摘Not long ago, Bao Peide, DeputyDirector-General of the Civil AviationAdminstration of China (CAAC),briefed Chinese and foreign reporters on thegeneral development trend of China’s civilaviation industry.
文摘With the enhancement of our country's comprehensive national strength, the unprecedented development of China's civil aviation provided more professional demand of civil aviation for society and also brought opportunities for vocational colleges in our country. This paper will takes Civil Aviation English Listening and Speaking course of flight attendants and aviation service majors in Chongqing Hailian Vocational for example. Several suggestions on civil aviation English teaching are put forward simply. It will discuss how to carry on the effective teaching of English curriculum reform.
文摘The main task of meteorological observation is to release the observed meteorological elements timely and accurately, to ensure the authenticity and reliability of meteorological information, and to ensure the normal operation of flights. At present, due to the frequent adjustment of civil aviation meteorological observation standards and related systems, there are many problems in the recording of observation data, resulting in confusion of information. Correctly use the civil aviation meteorological observation equipment, ensure the effective management of the observation data. In order to further play the role of observation equipment, the advantages of computer and internet technology should be brought into play to improve the performance and utilization rate of the equipment.
基金“Chenguang Program”supported by Shanghai Education Development Foundation and Shanghai Municipal Education Commission(16CGB28).
文摘Fireworks products are energy-containing materials and are hazardous during production,storage,transportation,and use.By analyzing the range of civil aviation ground ambient temperature and civil aviation cabin ambient temperature in storage and ground operation as well as establishing a spontaneous combustion mathematical model for cylindrical fireworks products based on the spontaneous combustion theory,we identified the critical temperature for spontaneous combustion of a single spray and analyzed the thermal safety of fireworks products under the civil aviation ambient temperature by example to provide theoretical support for the feasibility study of transporting fireworks products by civil aviation.
文摘With the improvement of China's economic level, China's aviation industry has developed rapidly, especially China's civil aviation industry has stepped onto a new stage. At civil aviation airports, the possibility of collision with birds has increased significantly in recent years, seriously threatening the civil aviation economy and even the safety of pilots and their passengers. On this basis, this paper will develop the ecological research methods and prevention strategies of airport bird status from the following aspects. Based on his long-term experience, the author puts forward some suggestions for reference.
基金supported in part by the National Basic Research Program of China (Grant No.2012CB955404)the National Natural Science Foundation of China (Grant No.61472041)the Foundation for Innovative Research Groups of the National Natural Science Foundation of China (Grant No.41321001)
文摘As an important infrastructure system, civil aviation network system can be severely affected by natural hazards. Although a natural hazard is usually local, its impact, through the network topology, can become global.Inspired by Wilkinson's work in 2012, this article proposes a new quantitative spatial vulnerability model for network systems, which emphasizes the spreading impact of spatially localized hazards on these systems. This model considers hazard location and area covered by a hazard,and spatially spreading impact of the hazard(including direct impact and indirect impact through network topology) and proposes an absolute spatial vulnerability index and a relative spatial vulnerability index to reflect the vulnerability of a network system to local hazards. The model is then applied to study the spatial vulnerability of the Chinese civil aviation network system. The simulation results show that(1) the proposed model is effective and useful to study spatial vulnerability of civil aviation network systems as the results well explain the general situation of the Chinese civil aviation system; and(2) the Chinese civil aviation network system is highly vulnerable to local hazards when indirect impacts through network connections are considered.
基金the National Natural Science Foundation of China(Grant No.U21B6001,62006040,62376058,U21A20488)the Fundamental Research Funds for the Central Universities,and ZhiShan Young Scholar Program of Southeast University.We thank the Big Data Computing Center of Southeast University for providing the facility support on the numerical calculations in this paper.
文摘In the process of developing the C919 large aircraft customer service intelligence system,we find that heterogeneous and incomplete data cause the inefficient and inaccurate decision making.Thus,to solve this problem,we propose to introduce the idea of ontology modeling and reasoning into competitive intelligence system building in this paper.We first present the building principles and methods of the civil aviation customer service ontology.We then define the classes and properties to contribute a real-world civil aviation customer service ontology,which is published on the Web(http:/www.openkg.cn/dataset/cacso).We finally design SWRL rules corresponding to different intelligence analysis targets to support reasoning in our designed competitive intelligence system.
