森林旅游地空气负离子评价标准的研究   总被引：1，自引：0，他引：1  

石强  李崇贵 《深圳职业技术学院学报》2002,1(1):20-25

随着森林生态旅游的兴起及人们保健意识的增强,空气负离子作为一种重要的森林旅游资源已越来越受到人们的重视。本文分析研究了在森林环境中实测的大量数据,并采用标准对数正态变换法,制定出森林旅游区空气负离子的分级评价标准,以此为依据,对北京小龙门森林公园及广州流溪河国家森林公园主要景区空气负离子状况进行了评价。  相似文献   

保护文物古迹 发掘尧山文化——隆尧县尧山文物古迹现状调研报告     

靳婷婷 《河北旅游职业学院学报》2014,(4):18-23

尧山文物古迹群分布在河北省邢台市隆尧县尧山的南山峰顶和北山宣务峰上,不仅有汉代的尧祠和尧庙、隋代高僧彦琮墓和进士赵渔的墨题石刻等,还有隋唐及其以后的石碑壁刻、准提千佛石塔、皇姑楼等。这些宝贵的文物很多在文革中遭到空前破坏,改革开放后又因村民开山炸石二度受到破坏。秉承着继承与发展传统文化的思想,通过实地调研、访谈调查、问卷调查等对尧山及周边几个村子进行调研,总结尧山文化发展保护现状,综合以往相关资料,对当地政府建设尧山文化旅游区提出了相关建议。  相似文献   

Efficiently capturing large,complex cultural heritage sites with a handheld mobile 3D laser mapping system     

《Journal of Cultural Heritage》2014,15(6):670-678

Accurate three-dimensional representations of cultural heritage sites are highly valuable for scientific study, conservation, and educational purposes. In addition to their use for archival purposes, 3D models enable efficient and precise measurement of relevant natural and architectural features. Many cultural heritage sites are large and complex, consisting of multiple structures spatially distributed over tens of thousands of square metres. The process of effectively digitising such geometrically complex locations requires measurements to be acquired from a variety of viewpoints. While several technologies exist for capturing the 3D structure of objects and environments, none are ideally suited to complex, large-scale sites, mainly due to their limited coverage or acquisition efficiency. We explore the use of a recently developed handheld mobile mapping system called Zebedee in cultural heritage applications. The Zebedee system is capable of efficiently mapping an environment in three dimensions by continually acquiring data as an operator holding the device traverses through the site. The system was deployed at the former Peel Island Lazaret, a culturally significant site in Queensland, Australia, consisting of dozens of buildings of various sizes spread across an area of approximately 400 × 250 m. With the Zebedee system, the site was scanned in half a day, and a detailed 3D point cloud model (with over 520 million points) was generated from the 3.6 hours of acquired data in 2.6 hours. We present results demonstrating that Zebedee was able to accurately capture both site context and building detail comparable in accuracy to manual measurement techniques, and at a greatly increased level of efficiency and scope. The scan allowed us to record derelict buildings that previously could not be measured because of the scale and complexity of the site. The resulting 3D model captures both interior and exterior features of buildings, including structure, materials, and the contents of rooms.  相似文献   

The Suitability of Web Analytics Key Performance Indicators in the Academic Library Environment     

Jody Condit Fagan 《The Journal of Academic Librarianship》2014

As the demand for library assessment grows, academic libraries are becoming more interested in Web analytics. Data are automatically gathered and provide information about a wide variety of online interactions. Libraries have long used simple counts such as visits and page views, but have more recently begun to choose strategic benchmarks, also known as key performance indicators (KPIs). Many common KPIs were created for commercial websites and are challenging to adapt for libraries. However, the underlying concepts are sufficiently valuable that libraries should explore their use. By evaluating the validity of web metrics, libraries can further the development of standards and benchmarks to support future investigations. This article discusses how commercial web metrics might be adapted for use in academic libraries. First, the limitations of web analytics are presented. Major key performance indicators used in the commercial sector are reviewed in the academic library context. Finally, the article discusses how the various indicators might support specific library website goals and decisions and uses local data to illustrate one example case. As libraries choose web analytic methods, they should deliberately evaluate their validity. Over time, this will slowly build the profession's ability to use web analytics more effectively for library assessment.  相似文献   

Vast and dispersed: Developing portable facilities for non-invasive analysis and recording of heritage sites in China     

Bomin Su  Sharon Cather 《文物保护研究》2014,59(5):S141-S144

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The use of menthol on the archaeological site at the Mausoleum of the First Qin Emperor     

Jane Xiangna Han 《文物保护研究》2014,59(5):S223-S224

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保护文物古迹 发掘尧山文化——隆尧县尧山文物古迹现状调研报告     

靳婷婷 《承德职业学院学报》2014,(4)

尧山文物古迹群分布在河北省邢台市隆尧县尧山的南山峰顶和北山宣务峰上,不仅有汉代的尧祠和尧庙、隋代高僧彦琮墓和进士赵渔的墨题石刻等,还有隋唐及其以后的石碑壁刻、准提千佛石塔、皇姑楼等。这些宝贵的文物很多在文革中遭到空前破坏,改革开放后又因村民开山炸石二度受到破坏。秉承着继承与发展传统文化的思想,通过实地调研、访谈调查、问卷调查等对尧山及周边几个村子进行调研,总结尧山文化发展保护现状,综合以往相关资料,对当地政府建设尧山文化旅游区提出了相关建议。  相似文献   

Spatial decoupling of light absorption and reaction sites in n-Si photocathodes for solar water splitting     

Shujie Wang  Tuo Wang  Bin Liu  Huimin Li  Shijia Feng  Jinlong Gong 《国家科学评论(英文版)》2021,8(8)

Metal-insulator-semiconductor (MIS) photocathodes offer a simple alternative to p-n junction photocathodes in photoelectrochemical water splitting. However, the parasitic light absorption of catalysts and metal layers in the MIS junction, as well as the lack of low work function metals to form a large band offset with p-Si, severely limit their performance. This paper describes an MIS photocathode fabricated from n-Si, rather than the commonly used p-Si, to spatially decouple light absorption from reaction sites, which enables the majority carriers, instead of the commonly used minority carriers, to drive the surface reaction, making it possible to place the reaction sites far away from the light absorption region. Thus, the catalysts could be moved to the backside of the MIS junction to avoid light shielding. Moreover, the adoption of n-Si unlocks a variety of high work function materials for photovoltage generation. The obtained n-Si MIS photocathode exhibits an applied bias photon-to-current efficiency of 10.26% with a stability up to 300 h.  相似文献   

生态环境可持续发展视野下的世界自然遗产保护策略   总被引：1，自引：0，他引：1  

李华明  张国云 《民族教育研究》2006,17(2):88-92

世界自然遗产是大自然馈赠给人类的珍贵遗存。对自然遗产的开发和利用必须坚持“保护为主”的原则,而景区经营权转让却违背了《保护世界文化和自然遗产公约》的代际公平原则。在现实奈件下,保护和管理好世界自然遗产应当理顺管理体制、健全相关法规、建立评估监测体系、狠抓世界遗产的教育工作。  相似文献   

杭州都市圈高等级旅游景区空间联系与空间组织研究     

琚胜利  葛恒蔚 《中国名城》2021,(4):48-56

旅游空间联系与目的地空间特性是旅游地理学的重要研究内容.在提出旅游景区空间联系强度、内向度、外向度、中心性概念和模型基础上,利用Arcgis网络分析、Matlab矩阵计算、Ucinet中心性分析功能,测算出杭州都市圈旅游景区空间联系的特征.研究表明:杭州都市圈景区空间联系特性总体呈现中心外围结构,中心性等级体系明显,区...  相似文献