While adopting an elevation-over-azimuth architecture by an inter-satellite linkage antenna of a user satellite, a zenith pass problem always occurs when the antenna is tracing the tracking and data relay satellite （...While adopting an elevation-over-azimuth architecture by an inter-satellite linkage antenna of a user satellite, a zenith pass problem always occurs when the antenna is tracing the tracking and data relay satellite （TDRS）. This paper deals with this problem by way of, firstly, introducing movement laws of the inter-satellite linkage to predict the movement of the user satellite antenna followed by analyzing the potential pass moment and the actual one of the zenith pass in detail. A number of specific orbit altitudes for the user satellite that can remove the blindness zone are obtained. Finally, on the base of the predicted results from the movement laws of the inter-satellite linkage, the zenith pass tracing strategies for the user satellite antenna are designed under the program guidance using a trajectory preprocessor. Simulations have confirmed the reasonability and feasibility of the strategies in dealing with the zenith pass problem.展开更多
Guidance programs have significant roles in preparing students for the future.The study recognizes that guidance and counseling programs are a transformative process of helping students strengthen their career plannin...Guidance programs have significant roles in preparing students for the future.The study recognizes that guidance and counseling programs are a transformative process of helping students strengthen their career planning,education,and preparation for employment.The guidance programs of first-year college students from Guangdong Peizheng College(GPC)in Guangdong Province,China was investigated,with 357 freshman students currently enrolled in the participating school involved in this study.Moreover,12 guidance counselors were interviewed through focused-group discussions,including the school director,for the qualitative component of the study.Utilizing the convergent parallel design mixed method,the study was able to elucidate the quantitative and qualitative relevance of the data gathered from the selected participants.The emerging results found that Chinese freshman students were satisfied with all of the parameters of the guidance programs of the school.The school counselors are able to provide students with a rich reservoir of academic cand guidance support,career mentoring,and career guidance.There were contributing factors that need to be addressed if improvement and innovation of the guidance program is the primary goal.Support and resources should be prioritized in order to enrich the development not only of the students but also of the guidance counselors.The study serves as empirical evidence for proposing an improved school-based guidance program as practical outputs of the study further to innovate the effectiveness of the implementation of guidance services.展开更多
文摘While adopting an elevation-over-azimuth architecture by an inter-satellite linkage antenna of a user satellite, a zenith pass problem always occurs when the antenna is tracing the tracking and data relay satellite （TDRS）. This paper deals with this problem by way of, firstly, introducing movement laws of the inter-satellite linkage to predict the movement of the user satellite antenna followed by analyzing the potential pass moment and the actual one of the zenith pass in detail. A number of specific orbit altitudes for the user satellite that can remove the blindness zone are obtained. Finally, on the base of the predicted results from the movement laws of the inter-satellite linkage, the zenith pass tracing strategies for the user satellite antenna are designed under the program guidance using a trajectory preprocessor. Simulations have confirmed the reasonability and feasibility of the strategies in dealing with the zenith pass problem.
文摘Guidance programs have significant roles in preparing students for the future.The study recognizes that guidance and counseling programs are a transformative process of helping students strengthen their career planning,education,and preparation for employment.The guidance programs of first-year college students from Guangdong Peizheng College(GPC)in Guangdong Province,China was investigated,with 357 freshman students currently enrolled in the participating school involved in this study.Moreover,12 guidance counselors were interviewed through focused-group discussions,including the school director,for the qualitative component of the study.Utilizing the convergent parallel design mixed method,the study was able to elucidate the quantitative and qualitative relevance of the data gathered from the selected participants.The emerging results found that Chinese freshman students were satisfied with all of the parameters of the guidance programs of the school.The school counselors are able to provide students with a rich reservoir of academic cand guidance support,career mentoring,and career guidance.There were contributing factors that need to be addressed if improvement and innovation of the guidance program is the primary goal.Support and resources should be prioritized in order to enrich the development not only of the students but also of the guidance counselors.The study serves as empirical evidence for proposing an improved school-based guidance program as practical outputs of the study further to innovate the effectiveness of the implementation of guidance services.
