论民俗旅游资源的基本特征及其开发原则

富有民族特色的民俗旅游是一项具有广阔前景的旅游项目。民俗旅游资源具有世界性、地域性、集体性、增智性和封闭性等基本特征。开发利用民俗旅游资源要严格掌握和妥善运用有关的民族政策，保护民族利益；要注重发挥民俗资源特色和保护当地社会文化环境，避免盲目仿效、随意移樾和粗制滥造；要区分主次，重点开发，切忌一拥而上；要注意把当地民俗资源优势与其它景观优势结合配置，增强吸引力，提高效益。     

REMOTE SENSING OF CLOUD BOTTOM HEIGHT AND CLOUD TEMPERATURE BY INFRARED RADIOMETER

The feasibility of retrieving cloud bottom height (CBH) and cloud bottom temperature (CBT) by infraredradiometer has been studied by simulations with a large number of historical radiosounding data and field obser-vations.The results show that it is feasible to retrieve CBH and CBT by radiometer observation in infrared band.In this paper we also demonstrate simply that through joint observations by a dual-wavelength (1.35 cm and8.5mm) microwave radiometer and by infrared radiometer (8.5—12.5μm),it is possible to obtain total watervapor,liquid water content in clouds and CBH and CBT.     

新疆某些地震前地下水动态异常特征的分析

本文在清理乌鲁木齐小区域井网地下水位资料和新疆某些油井动态资料的基础上,通过对震例的分析,探讨了本区地震前地下水动态异常的基本特征。认为,地震前地下水动态短临异常是明显的;异常仅仅出现在震源附近的有限区域;异常形态大致可以分为两种类型,即下降型和喷涌型。最后,对在地震孕育过程中与地下水异常有关的几个问题进行了初步的讨论。     

新疆天山地区地下流体地震前兆研究的现状与发展前景

系统地介绍了新疆天山重点震监视区下流体观测网，及其地质构造环境和地下水的成因类型，总结了２０年来地下流体地震前兆探索与地震前兆探索与地震预报研究的基本经验和成果。     

北天山地震活动区地热信息的观测与研究

１９８９年以来，在北天山重点监视区设立了６个地热观测站（３个热水井，３个温泉），采用分辨率为０．０００１℃，精度为±０．００５℃的石英数字温度计连续记录水温的动态变化。观测结果表明：水温有两类正常动态类型，即稳定动态和年周期动态。４次中强地震前后水温出现明显的异常变化，震后变化更为剧烈。地热前兆异常形态各异，因井泉不同而不同。认为，深入研究活动断裂带和地热异常区的热信息不仅对寻找地震前兆，而且对地震危险区判定具有重要作用。     

高烈度区连续梁桥的减震设计方法研究

本文以高烈度区的某三跨连续梁桥为例，分别采用基础隔震和消能减震两种措施进行结构的减震分析；针对隔震结构减震效果好但主梁位移过大的特点，提出了在采用铅芯橡胶隔震支座的同时设置粘滞阻尼器的减震方案，其非线性时程分析结果表明，该方案能有效地降低结构的地震反应，可供工程实践参考。     

A new approach of selecting real input ground motions for seismic design: The most unfavourable real seismic design ground motions

This paper presents a new way of selecting real input ground motions for seismic design and analysis of structures based on a comprehensive method for estimating the damage potential of ground motions, which takes into consideration of various ground motion parameters and structural seismic damage criteria in terms of strength, deformation, hysteretic energy and dual damage of Park & Ang damage index. The proposed comprehensive method fully involves the effects of the intensity, frequency content and duration of ground motions and the dynamic characteristics of structures. Then, the concept of the most unfavourable real seismic design ground motion is introduced. Based on the concept, the most unfavourable real seismic design ground motions for rock, stiff soil, medium soil and soft soil site conditions are selected in terms of three typical period ranges of structures. The selected real strong motion records are suitable for seismic analysis of important structures whose failure or collapse will be avoided at a higher level of confidence during the strong earthquake, as they can cause the greatest damage to structures and thereby result in the highest damage potential from an extended real ground motion database for a given site. In addition, this paper also presents the real input design ground motions with medium damage potential, which can be used for the seismic analysis of structures located at the area with low and moderate seismicity. The most unfavourable real seismic design ground motions are verified by analysing the seismic response of structures. It is concluded that the most unfavourable real seismic design ground motion approach can select the real ground motions that can result in the highest damage potential for a given structure and site condition, and the real ground motions can be mainly used for structures whose failure or collapse will be avoided at a higher level of confidence during the strong earthquake. Copyright © 2007 John Wiley & Sons, Ltd.     

Location-based services: technical and business issues

Geographical Information System (GIS) and Global Positioning System (GPS) technologies are expanding their traditional applications to embrace a stream of consumer-focused, location-based applications. Through an integration with handheld devices capable of wireless communication and mobile computing, a wide range of what may be generically referred to as 'Location-Based Services' (LBS) may be offered to mobile users. A location-based service is able to provide targeted spatial information to mobile workers and consumers. These include utility location information, personal or asset tracking, concierge and route-guidance information, to name just a few of the possible LBS. The technologies and applications of LBS will play an ever increasingly important role in the modern, mobile, always-connected society. This paper endeavours to provide some background to the technology underlying location-based services, and to discuss some issues related to developing and launching LBS. These include whether wireless mobile technologies are ready to support LBS, which mobile positioning technologies can be used and what are their shortcomings, and how GIS developers manipulate spatial information to generate appropriate map images on mobile devices (such as cell phones and PDAs). In addition, the authors discuss such issues as interoperability, privacy protection and the market demand for LBS. Electronic Publication     

自动综合算子分析及算法库的建立

在分析自动综合过程和自动综合系统构成的基础上，指出了自动综合算子库对自动综合的必要性，并以现有的各种综合算子划分为参考，对自动综合算子进行了重新划分，提出了算子库中的算法集合，以此来建立自动综合算子库。     

一种地形图快速扫描矢量化方法

提出了利用adobe的Steamline以及AutoCAD、CorelDraw对纸介图进行扫描矢量化的方法，该方法的主要功能是原图扫描、扫描图矢量化及矢量图校正的处理。经实践应用，其速度、精度等均可满足一般地理信息系统的要求。