语音云及其在声控导航中的应用

语音作为人机交互的有效手段之一,其研究也越来越成熟且接近实用,将语音技术应用到导航系统中,可以使驾驶者无需双手便可以与车载导航系统进行交互,极大地提高了行车的安全性和车载导航系统的易用性。结合国内已研发出的某语音云,研究了针对导航特殊场景的应用,建立了声控导航语句规则库,并应用到某导航系统中,取得了较好的效果。     

旅游特征产业的关联与波及效应——福建省旅游卫星账户(2007)的构建与实践

作为科学测度旅游经济的有效工具,旅游卫星账户的构建有助于系统地分析旅游产业的构成及其经济特征。福建省2007年旅游产业的结构呈现出较强的梯度特征,产业的增加值系数高,但不同产业之间的增值能力差异大,投入结构高度硬化,产业间技术经济联系密切,产业的波及效应超过社会的平均水平,对国民经济的拉动作用较强。     

学术用户的数字信息需求研究

论述通过访谈法获取的高校学术用户对数字信息需求的新特点,从需求内容、需求满足方式与行为障碍、需求特征与需求心理三个方面进行阐述;基于作为网络信息资源深层组织模式的学科导航系统的需求满足现状的相关分析,指出学科导航系统建设应以用户需求为导向,并提出“用户中心模式”学科导航系统的新概念,同时对其必要性进行论述。     

Characterizing navigation in interactive learning environments

Interactive learning environments (ILEs) are increasingly used to support and enhance instruction and learning experiences. ILEs maintain and display information, allowing learners to interact with this information. One important method of interacting with information is navigation. Often, learners are required to navigate through the information space of an ILE, a process which can be quite difficult and cognitively exacting as the information space becomes very large and complex. Proper design can make this process less exacting and, at the same time, facilitate better learning of the information space. However, this is not easy to do, especially for ILEs. Frameworks can assist in the effective analysis and design of interactive environments. However, there is lack of conceptual frameworks for guiding the analysis and design of navigation in ILEs. This paper tries to address this issue by presenting a framework which can be used to characterize navigation within ILEs. To create this framework, this paper brings together research from various disciplines, such as human-computer interaction design, educational multimedia design, cognitive technologies and learning sciences. This framework prescribes a three-stage process for designing and analyzing navigation: 1. content structuring; 2. information navigation modeling; 3. interface presentation structuring. By bringing these three stages together, it is intended to provide a conceptual framework to assist and guide designers in the proper analysis and design of navigation in ILEs.     

Language and Spatial Cognition in Route Navigation

The purpose of this study is to investigate the contrast between using street names or landmarks to process spatial in?structions. The study confirms the special cognitive status of landmarks in the ...     

基于组合导航的四旋翼飞行器控制系统研究

根据刚体动力学原理,建立了四旋翼飞行器的动力学模型,利用捷联惯导和GPS组合作为四旋翼飞行器的导航系统,采用方向余弦矩阵的变换方法,实现了对飞行器的姿态解算;采用卡尔曼滤波算法实现姿态角信号的校正,实现了四旋翼飞行器的导航;采用基于PID算法的悬停状态的控制策略,实现了四旋翼飞行器的垂直起降和稳定的悬停．     

构建军校重点学科信息导航系统的思考

文章论述构建军队院校重点学科信息导航系统的必要性和导航系统的信息采集范围,提出了应解决的有关问题及相应解决办法,如搜索引擎、中文信息自动标引和分类、数据并发处理、导航系统相关服务等.     

基于时序LAI的地块尺度玉米长势监测方法

农作物长势监测可为田间管理措施调整和农作物产量预测提供及时、准确的信息。针对中国地块面积小的情况,本文采用中高分辨率的多源遥感影像Landsat-7 ETM+影像、Landsat-8 OLI影像、高分一号（GF-1）影像、HJ-1 A/B卫星影像为数据源;针对目前过多依赖NDVI等易饱和植被指数的问题,研究中选择LAI为长势监测指标,并利用PROSAIL辐射传输模型反演LAI,以保证该指标的准确性;长势实时监测采用RPLAI、LVCI、MLVCI指标,从多个角度表征长势的实时监测结果。研究结果表明：①同时相GF-1影像和Landsat-8 OLI影像具有较高的相关性,2种影像在近红外波段、绿波段、红波段的相关性决定系数R²分别为0.9320、0.7339、0.7153。②基于PROSAIL模型可以反演得到高精度的LAI,基于时序LAI的玉米生长过程监测结果表明：2015年,黑龙江农垦总局八五二农场6月下旬玉米冠层LAI快速增加,7月底、8月初LAI达到最大,并持续一段时间,进入8月下旬后,LAI开始下降。③利用RPLAI、LVCI、MLVCI指标对研究区玉米长势实时监测的结果表明,与2011—2014年相比,2015年八五二农场玉米长势一般,研究区北部长势较好,南部区域长势较差。从研究结果我们得出如下结论：①同时相的Landsat-8 OLI影像与GF-1遥感影像,经过相对辐射定标后可以结合使用于农作物长势监测中;②利用PROSAIL模型反演时序LA,可用于地块尺度的农作物长势精细监测。     

Web Design Trends in Academic Libraries—A Longitudinal Study

This study examines several key design elements of 37 academic library Web sites (members of the Association of Southeastern Research Libraries) and how they have changed between 2012 and 2015. While several studies have reviewed library Web sites looking for common design elements and content, the present work may be the first to look at the design elements of a large group of library Web sites over time. This study has two main goals: to present an objective analysis of the navigation and search interface designs at research university library Web sites, and to assess the usage of Web-scale discovery systems and content management systems in libraries. Other areas explored include when sites were most recently redesigned and whether sites have adopted a mobile-friendly, responsive design. Notable findings include a very high usage of Web-scale discovery systems, an increasing adoption of open source content management systems, and increasing implementation of responsive design. Also noted was a strong and growing standardization in navigation design. This study concludes with a review of the trends and discussion of current design patterns in academic library Web sites.     

厦金直航与两岸关系

厦金直航作为“一个国家内部地区间的特殊航线”，在中断50年后得以恢复，是两岸关系的重大突破，有利于闽台两地的交流与合作。台湾当局逐步放宽相关限制是大势所趋，金门作为中转地的地位和作用亦将逐步提升。