物权行为理论功能的重新审视

学界对物权行为理论的争论大多集中在该理论对保护交易安全的功能上。本文认为物权行为理论的真正功能表现在三个方面:一是利益平衡;二是统一阐释所有权的移转问题;三是意思自治功能。并指出,物权行为抽象原则正确性的基础不是交易安全论,而是平衡论。利益平衡是该理论正确性的基础和界线。在利益失去平衡的情况下,应对抽象原则的适用予以限制。     

Groundwater irrigation management in the Kingdom of Saudi Arabia： A case study of Al-Wajid aquifer

Groundwater is the primary source for water irrigation in the Kingdom of Saudi Arabia. As a result of lack of basic knowledge on irrigation practices, massive abstractions of groundwater occurred in 1980s. A decision support linear programming （LP） model was developed to help in allocation of optimal groundwater irrigation use, to assess policies implication for water management efficiency, and to estimate welfare impact on producer surplus is developed. Due to massive abstractions occurring in 1980s, Al-Wajid aquifer water levels have dropped in agricultural areas by more than 200 m. The total groundwater of Al-Wajid aquifer that can be saved is equal to 158.7 MCM for the first scenario, 211.9 MCM for the second scenario, and 15,087 MCM for the third scenario. Regarding welfare analysis impact, it is clear that the second scenario alternative is the best alternative, since the value of the producer surplus is the highest for the two study regions and also the two type schemes of modern and traditional irrigation, except the traditional irrigation of Najran region.     

Idea与古希腊两种哲学思维方式

Idea作为一个哲学概念,蕴涵的是两种不同的哲学思维方式,一种是感觉的抽象思维,另一种是理智的抽象思维。两种思维方式分别构造了两种哲学的世界:本原世界和本质世界。由此形成两种哲学传统。柏拉图的idea是一种隐喻,通过这个概念,柏拉图在两种哲学传统之间进行了沟通和转换。     

人体组织两种简易保存法DNA抽提效果的比较研究

比较研究人体不同组织在不同保存条件下DNA抽提效果。取冷冻保存和50％乙醇固定保存的各种组织，用有机溶剂抽提法提取DNA。用50％乙醇固定保存的人体不同组织在校长时期内仍可获得与新鲜冷冻组织相近的DNA抽提效果，经卡方检验二者无明显差异（X2≤0．21，P≥0．995）。乙醇保存法简便易行，DNA产量高，效果好，适用于各种特殊情况下的组织保存。     

物权行为理论基础问题浅谈

当前物权立法争论的焦点在于物权行为理论。国内学者对该理论的认识尚有一些误区。有必要参照德国民事立法进一步研究物权行为理论。