Some relationships between two different concepts of noncommutative time operators are discussed. One is the concept of a Hermitian, but not self-adjoint time operator T_B based on a positive-operator-valued measure for a dynamical observable B. The other is the concept of a self-adjoint time ...
摘要: 杜绝地面管线"马路拉链",高空线路"蜘蛛网",城区道路雨水漫灌,进一步打通城市地下脉络,畅通城市"血液"循环,不断提升南京江北新区城市发展水平和形象品质……由南京江北新区公建中心建设的综合管廊项目已成为新区建设的一张亮丽名片.7月10日,新区综合管廊正式投入运营.关键词:...
随着畜牧业的快速发展,肉牛养殖场的粪污处理成为一个重要的环境问题.本文旨在探讨适宜的粪污处理技术,并分析其经济效益,以期为肉牛养殖业的可持续发展提供理论支持.文章首先介绍了肉牛养殖场粪污的特点及其对环境的影响,随后详细阐述了几种适宜的粪污处理技术,包括生物处理,物理处理和化学处理等,并对其进行经济效益分析...
Boundary Scan is possibly the most resourceful test technique which - in a similar way to In-Circuit Test (ICT) but without the physical contact - detects the failure location, sets thousands of test points and needs only four lines. After lengthy discussions about the principle of testing thro...