Since the 18th National Congress of Chinese Communist Party,the great call for building a maritime power and a power⁃ful military force has set higher standards for Navy’s development and the application of strategie...Since the 18th National Congress of Chinese Communist Party,the great call for building a maritime power and a power⁃ful military force has set higher standards for Navy’s development and the application of strategies.As a maritime military force,the navy bears considerable responsibilities of safeguarding territorial sovereignty,maritime rights and interests with security and development as core mission,and defending the role and image of China as a major county in the world.This paper analyzes and studies naval officers’global competence development from three aspects,and discusses the significance and recommendations of strengthening the development of naval cadets’global competence in cooperation and exchange guided by“Belt and Road”Initia⁃tive(BRI).展开更多
针对传统Monte-Carlo方法存在计算量大、耗时过长的缺点,采用协方差分析描述函数技术(the covarianceanalysis describing function technique,CADET)法建立弹目相对运动方程。介绍统计协方差分析描述函数技术的原理,讨论非线性系统的...针对传统Monte-Carlo方法存在计算量大、耗时过长的缺点,采用协方差分析描述函数技术(the covarianceanalysis describing function technique,CADET)法建立弹目相对运动方程。介绍统计协方差分析描述函数技术的原理,讨论非线性系统的准线性化问题,对协方差分析描述函数技术在比例导引制导系统中的应用进行分析,并以实例说明。结果表明:该方法在进行舰空导弹制导性能分析时耗时短、统计性能好、精度高,明显优于传统Monte-Carlo法。展开更多
BACKGROUND Flight cadets need to have good physical fitness to cope with the challenges of flying missions.The continuous development of science and technology has led to the constant upgrading of fighter jets and the...BACKGROUND Flight cadets need to have good physical fitness to cope with the challenges of flying missions.The continuous development of science and technology has led to the constant upgrading of fighter jets and the improvement of their performance,which has resulted in new and higher requirements for the physical fitness of flight personnel.The traditional physical training mode,method,and assessment have been used for many years and do not meet current fitness needs.AIM To investigate the impact of a 12-wk comprehensive anti-G fitness training program on the aerobic capacity of aviation cadets and to evaluate its effectiveness.METHODS Fifty-five cadets were randomly assigned to control and experimental groups using a randomized,single-blind design.The control group maintained their existing training regimen,while the experimental group participated in a 12-wk comprehensive training intervention.The training program comprised strength training twice per week,high-intensity interval training three times per week,and supplemental nutritional and psychological support.Maximal oxygen uptake(VO2max),lower limb strength,and hemoglobin levels were measured at baseline,at 6 wk and 12 wk post-intervention.RESULTS Repeated measures analysis of variance revealed significant differences of both VO2max and relative VO2 in both groups across time points(P<0.05).However,no significant time-group interaction was observed(P>0.05).Paired t-tests comparing baseline and 12-wk results showed that VO2max and relative VO2 were significantly higher in the experimental group than the control group(P<0.05).This suggests that the training program effectively enhanced the aerobic capacity of the experimental group.Key indicators of aerobic capacity,bilateral lower limb strength and hemoglobin levels,were also significantly different over time and between groups(P<0.05).No significant differences were noted in heart-rate metrics(P>0.05).CONCLUSION A 12-wk comprehensive anti-G fitness training program significantly improved the aerobic capacity of aviation cadets,thereby enhancing their overall capacity and laying a physiological foundation for enduring high-G flights.展开更多
Motivation is one of the critical factors that affect foreign language learning. This study attempts to explore the factors that affect motivation in English learning of non-English major cadets. An investigation is c...Motivation is one of the critical factors that affect foreign language learning. This study attempts to explore the factors that affect motivation in English learning of non-English major cadets. An investigation is conducted in a military academy in southwest China, in which a Likert scale questionnaire is adopted. Through data analysis, eight factors are found to affect cadets' English learning motivation. Moreover, suggestions are provided to shed light on English teaching and learning in military academies.展开更多
The study aimed to evaluate body mass changes and urine biomarker responses during a Combat Search and Rescue(CSAR)military exercise performed in a tropical region.Ten urinary biomarkers were analyzed via dipstick uri...The study aimed to evaluate body mass changes and urine biomarker responses during a Combat Search and Rescue(CSAR)military exercise performed in a tropical region.Ten urinary biomarkers were analyzed via dipstick urinalysis to assess the physiological strain and the potential health risks associated with this exercise.Body mass and urine samples were obtained from 151 male cadets([21.3±1.6]year-old;height[177.2±4.1]cm)before and after completing the efforts of a CSAR exercise that lasted approximately 10 hour(h).Body mass significantly decreased(p<0.05)by more than 3%immediately post-exercise(from[75.0±9.85]kg to[72.6±9.6]kg),returning to pre-exercise levels within 14 and 38 h after the complen.Interestingly,urine specific gravity(USG)paralleled the changes in body mass and exhibited a significant increase immediately after the exercise.Similar patterns of significant alterations were observed in urine acidity,ketonuria,bilirubinuria,and hematuria,mirroring the time course of changes in USG.The other evaluated urine variables did not show significant changes.The reduction in body mass was significantly correlated with changes in USG,ketonuria,bilirubinuria and proteinuria after the military exercise.In summary,cadets engaged in the CSAR military exercise experienced physiologically meaningful dehydration and exhibited indirect markers of cell damage immediately after the exercise.However,these changes were spontaneously resolved within 14 h post-task.Monitoring selected noninvasive biomarkers could aid in managing performance and health risks during arduous military training.展开更多
文摘Since the 18th National Congress of Chinese Communist Party,the great call for building a maritime power and a power⁃ful military force has set higher standards for Navy’s development and the application of strategies.As a maritime military force,the navy bears considerable responsibilities of safeguarding territorial sovereignty,maritime rights and interests with security and development as core mission,and defending the role and image of China as a major county in the world.This paper analyzes and studies naval officers’global competence development from three aspects,and discusses the significance and recommendations of strengthening the development of naval cadets’global competence in cooperation and exchange guided by“Belt and Road”Initia⁃tive(BRI).
文摘针对传统Monte-Carlo方法存在计算量大、耗时过长的缺点,采用协方差分析描述函数技术(the covarianceanalysis describing function technique,CADET)法建立弹目相对运动方程。介绍统计协方差分析描述函数技术的原理,讨论非线性系统的准线性化问题,对协方差分析描述函数技术在比例导引制导系统中的应用进行分析,并以实例说明。结果表明:该方法在进行舰空导弹制导性能分析时耗时短、统计性能好、精度高,明显优于传统Monte-Carlo法。
基金the Ethics Committee of Beijing Sport University(No.2019113H).
文摘BACKGROUND Flight cadets need to have good physical fitness to cope with the challenges of flying missions.The continuous development of science and technology has led to the constant upgrading of fighter jets and the improvement of their performance,which has resulted in new and higher requirements for the physical fitness of flight personnel.The traditional physical training mode,method,and assessment have been used for many years and do not meet current fitness needs.AIM To investigate the impact of a 12-wk comprehensive anti-G fitness training program on the aerobic capacity of aviation cadets and to evaluate its effectiveness.METHODS Fifty-five cadets were randomly assigned to control and experimental groups using a randomized,single-blind design.The control group maintained their existing training regimen,while the experimental group participated in a 12-wk comprehensive training intervention.The training program comprised strength training twice per week,high-intensity interval training three times per week,and supplemental nutritional and psychological support.Maximal oxygen uptake(VO2max),lower limb strength,and hemoglobin levels were measured at baseline,at 6 wk and 12 wk post-intervention.RESULTS Repeated measures analysis of variance revealed significant differences of both VO2max and relative VO2 in both groups across time points(P<0.05).However,no significant time-group interaction was observed(P>0.05).Paired t-tests comparing baseline and 12-wk results showed that VO2max and relative VO2 were significantly higher in the experimental group than the control group(P<0.05).This suggests that the training program effectively enhanced the aerobic capacity of the experimental group.Key indicators of aerobic capacity,bilateral lower limb strength and hemoglobin levels,were also significantly different over time and between groups(P<0.05).No significant differences were noted in heart-rate metrics(P>0.05).CONCLUSION A 12-wk comprehensive anti-G fitness training program significantly improved the aerobic capacity of aviation cadets,thereby enhancing their overall capacity and laying a physiological foundation for enduring high-G flights.
文摘Motivation is one of the critical factors that affect foreign language learning. This study attempts to explore the factors that affect motivation in English learning of non-English major cadets. An investigation is conducted in a military academy in southwest China, in which a Likert scale questionnaire is adopted. Through data analysis, eight factors are found to affect cadets' English learning motivation. Moreover, suggestions are provided to shed light on English teaching and learning in military academies.
基金financed in part by the Coordenaçao de Aperfeiçoamento de Pessoal de Nível Superior-Brasil(CAPES)-Finance Code 001
文摘The study aimed to evaluate body mass changes and urine biomarker responses during a Combat Search and Rescue(CSAR)military exercise performed in a tropical region.Ten urinary biomarkers were analyzed via dipstick urinalysis to assess the physiological strain and the potential health risks associated with this exercise.Body mass and urine samples were obtained from 151 male cadets([21.3±1.6]year-old;height[177.2±4.1]cm)before and after completing the efforts of a CSAR exercise that lasted approximately 10 hour(h).Body mass significantly decreased(p<0.05)by more than 3%immediately post-exercise(from[75.0±9.85]kg to[72.6±9.6]kg),returning to pre-exercise levels within 14 and 38 h after the complen.Interestingly,urine specific gravity(USG)paralleled the changes in body mass and exhibited a significant increase immediately after the exercise.Similar patterns of significant alterations were observed in urine acidity,ketonuria,bilirubinuria,and hematuria,mirroring the time course of changes in USG.The other evaluated urine variables did not show significant changes.The reduction in body mass was significantly correlated with changes in USG,ketonuria,bilirubinuria and proteinuria after the military exercise.In summary,cadets engaged in the CSAR military exercise experienced physiologically meaningful dehydration and exhibited indirect markers of cell damage immediately after the exercise.However,these changes were spontaneously resolved within 14 h post-task.Monitoring selected noninvasive biomarkers could aid in managing performance and health risks during arduous military training.
