泥沙研究的发展趋势和新课题

根据国内外近年来泥沙运动研究的动向和资料积累,本文探讨了未来泥沙研究的发展趋势和面临的新课题,包括河道运动动力学、河床形态与泥沙输移的关系、非恒定流河床冲刷率、湿地泥沙生态学模拟、河口萎缩和海流输沙、全球产沙和泥沙概算、泥沙造陆、河流自净、土地利用变化的影响、黄河人造高含沙水流输沙入海和人工智能的应用等．     

自驾车旅游研究

近几个黄金周里自驾车旅游呈现出良好的发展势头,成为各地旅游的新亮点。在目前理论研究匮乏的情况下,认清其概念、内涵和其发展需要的客观基础显得十分必要。加强对自驾车旅游的市场特点和产品组成要素的研究将有利于中国自驾车旅游下一步的健康发展。一些发达国家自驾车旅游发展比较成熟,可以借鉴他们的发展经验,并结合中国具体情况,从政府、自驾车旅游俱乐部、旅行社、媒体等几个自驾车旅游重要参与主体的角度探讨中国自驾车旅游的发展之路。     

ETHICS IN GEOGRAPHICAL RESEARCH*

Ethical dilemmas involving issues of harm-benefit, privacy, deception, and sponsor relations are encountered frequently in geographical research. Geographers have not always been sensitive to ethical issues, nor have they always been able to reconcile their obligations to understanding and knowledge with those of respecting the dignity and integrity of research subjects. This paper reviews these fundamental ethical concerns. Four strategies for handling ethical difficulties are reviewed: individual self-regulation, disciplinary responses, institutional controls, and external controls. Individual self-regulation is recommended.