Quantum key distribution (QKD) and quantum key agreement (QKA) are two main branches of key establishment in quantum cryptography. However, the research of QKA falls far behind that of QKD, especially in practicability. The main reason is that QKA needs to resist not only the outside eavesdropping but also the participant cheating. Resisting dishonest participant is more difficult than resisting outside eavesdropping, especially when the apparatuses are imperfect. Actually, existing QKA protocols cannot tolerate the channel loss and have to rely on stable quantum storage. To solve this problem, we give a new quantum multi-party key agreement protocol based on the error-correcting code. Our protocol is loss tolerant, and the participants can measure the received qubits immediately in one of two conjugate bases, without storage, so our protocol can eliminate the requirement of quantum storage. Besides, our protocol is more fair because it can partially discriminate dishonest participants' cheating from outside eavesdropping (previously, these two attacks are generally checked simultaneously via decoy states but cannot be discriminated), as a result, dishonest participants generally will not cheat at the cost of losing good reputation.

高校院系党组织以党的建设高质量推动院系发展高质量,是全面落实新时代党的建设总要求的重要内容.高校院系党组织以党建促发展方面仍存在党建质量不高、定位不够精准、组织作用发挥不够充分和工作机制不够健全等问题,为此,要通过强化"双力"驱动、强化精准定位、强化作用发挥和强化制度保障来实现以党建促发展、以发展强党建的良性发展.

The wrong using of multimedia technique in advanced mathematics teaching can cause adverse impact on teaching effect.Combing the characteristics of multimedia assisted teaching and advanded mathematics teaching,this paper gives some recommendations on making the greatest use of multimedia techniques.

大学生思想政治教育面临接受动力不足的困扰,而体验教育是目前解决这一问题比较理想的教学模式.体验教育借助特定的经历,使学生通过想象、移情等多种心理活动的撞击,产生深入的认知.本文结合实践,总结了实施体验教学的步骤、效果及关键环节.

随着高校招生规模的扩大,贫困生数量在全体学生中所占比例也达到较高水平.高等教育收赍提高、学习生活压力增大等因素都对贫困学生产生了较大影响,而相应的帮扶、教育体系并不能完全满足要求.能否做好高校贫困生工作,更好地解决贫困生工作中面临的问题关系到学校的稳定与发展.本文结合工作实际对贫困生工作中出现的问题进行分析,进而研究对策.

作为高校与学生接触最多的教育工作者,辅导员从事心理健康工作既有得天独厚的优势,又有自身的限制因素,他们在高校心理工作中扮演着多重重要的角色,理清高校政治辅导在心理工作中的角色担当对于有效开展高校心理工作意义非凡。

This paper combines several steps of modeling and introduces the applications of MATLAB software in mathematical modeling through concrete examples.Using MATLAB can improve the efficiency and equality of mathematical modeling and enrich the methods and means of modeling,thus having great meanings.