引导新生积极有效地进行服装缝制工艺课的学习

培养并提供高素质的服装专业劳动者和实用型的中初级服装技术人才,是中等职业教育服装专业的责任和义务,而服装缝制工艺是服装设计与工艺专业的一门主干课程,是服装专业学习的基础和入门课程。

A novel SINR and mutual information based radar jamming technique

The improvements of anti-jamming performance of modem radar seeker are great threats to military targets. To protect the target from detection and estimation, the novel signal-to-interference-plus-noise ratio （SINR）-based and mutual information （Ml）-based jamming design techniques were proposed. To interfere with the target detection, the jamming was designed to minimize the S1NR of the radar seeker. To impair the estimation performance, the mutual information between the radar echo and the random target impulse response was used as the criterion. The spectral of optimal jamming under the two criteria were achieved with the power constraints. Simulation results show the effectiveness of the jamming techniques. SINR and MI of the SINR-based jamming, the MI-based jamming as well as the predefined jamming under the same power constraints were compared. Furthermore, the probability of detection and minimum mean-square error （MMSE） were also utilized to validate the jamming performance. Under the jamming power constraint of I W, the relative decrease of the probability of detection using S1NR-based optimal jamming is about 47%, and the relative increase of MMSE using Ml-based optimal jamming is about 8%. Besides, two useful jamming design principles are concluded which can be used in limited jamming power situations.

初中音乐课程发展趋势与教学改革研究

音乐课程在初中阶段的发展和教学改革是当前教育领域的热点问题。本文以人民音乐出版社(人音版)教材为例,研究初中音乐课程的发展趋势和教学改革。通过引用相关文献和实例,结合理论探讨了五个方面的内容,包括音乐课程目标的更新、教学方法的创新、评估体系的完善、跨学科整合的推进以及技术应用的融入。本文旨在提供一种新颖有创意的视角,通过实例和理论的结合,探讨初中音乐课程发展与教学改革的可行性和必要性。