鄱阳湖生态经济区地域范围研究

建设鄱阳湖生态经济区是江西省委、省政府提出的重要发展战略,其范围的界定是一项重要的基础工作.依据鄱阳湖区域的自然基础以及区域空间组织形式,从都阳湖平原、鄱阳湖区域网络型经济地域等方面界定了鄱阳湖生态经济区的范围.     

生命与熵

 熵是一个古老而又年轻的概念,说它古老,是因为早在100多年前(1854年)就已有人提到了它;说它年轻,是因为它有极强的生命力,正日益广泛地渗透到了许许多多的科技领域及日常生活之中。本文不拟介绍熵在各个领域中的应用,而只想就熵对生命科学中某些方面的影响作些初浅的说明。按照热力学的观点,生命是个开放系统。根据开放系统的热力学理论可以算出,其熵变ΔS=ΔQT-μjΔeNjT-μjΔiNjT(1)式中,ΔQ代表生命系统与外界环境交换的总热量,ΔeNj代表生命系统与外界所交换的第j种组元物质的摩尔数.     

江西城市化发展基本目标与对策研究

江西提出了加速工业化，城市化，实现在中部崛起的奋斗目标，该文通过对江西南北城市化差异分析，对江西实施非均衡战略和加快区域经济和城市化的条件进行了研究，从空间角度提出了加强江西城市发展竞争力的有关建议。     

The Essence of More Nonlocality with Less Entanglement in Bell Tests

In this paper, we will explore the essence of the phenomenon that state with less entanglement may generate greater Bell violation in the two-qubit Bell tests with CH-type inequalities, i.e., more nonlocality with less entanglement. We will show that this interesting but counterintuitive phenomenon is caused by the rotational asymmetry of the nonmaximally entangled state in the measurement plane. This asymmetry allows the both-side detection probabilities and the one-side detection probabilities obtain their maximal values with nonmaximally entangled state. But the maximal Bell violation may not always happen on nonmaximally entangled state, because these probabilities will compete with each other, and the Bell violation behaves differently for various CH-type inequalities.     

Quantum Key Distribution against Trojan Horse Attacks

Realistic experimental apparatus of quantum cryptography are imperfect, which may be utilized by a potential eavesdropper to eavesdrop on the communication. We show that quantum communication may be improved with quantum teleportation and entanglement swapping, which is robustly secure against the most general Trojan horse attacks. Our scheme is not an improvement of the communication apparatus, but the improvement of quantum communication protocol itself. We show that our modified schemes may be implemented with current technology.