排序方式: 共有21条查询结果,搜索用时 15 毫秒
1.
马文麒 《北华大学学报(社会科学版)》1996,(8)
本文用OGY方法研究了二维映象的混沌控制.计算机模拟表明,OGY参数微调法可以有效地控制混沌运动向周期运动的转变,混沌暂态时间的长短敏感地依赖于系统的初始状态,还用模拟噪声讨论了混沌控制的稳定性问题。 相似文献
2.
孙瑜 《天津市财贸管理干部学院学报》2011,13(3):93-95
道教是我国本土宗教,道教文化保存最为完好的建筑和壁画当属永乐宫。永乐宫壁画可谓元代道教绘画艺术之典范。壁画中的情节设置及表现手法等均能表现深厚的道教文化及独特神奇的道教美学思想。从艺术研究和创作的角度,永乐宫壁画也具有重要的启示作用。 相似文献
3.
Helen K. Liu Mei Jen Hung Lik Hang Tse Daniel Saggau 《The Australian journal of social issues》2020,55(2):182-200
It is increasingly common for urban planners and local policymakers to adopt interactive technologies, such as geographical information systems (GISs), to inform their decision making and to enhance performance. This paper aimed to assess the role that interactive technology can play in enhancing urban governance to meet social needs by improving local organisations’ capacities, client access, and service effectiveness and responsiveness, as well as community building. Using the previous research framework on mapping community capacity developed by Brudney et al. (Community Development Journal, 2016, 52, 354) and Çöltekin et al. (Cartography and Geographic Information Science, 2009, 36, 5–17), we examined a simulated online interactive map for service provision in Hong Kong and interviewed around 20 local community organisations and 100 local residents about their user experience, their willingness to support its long-term adoption and their challenges. Our findings reveal that local residents find the interactive map helpful, particularly in improving service access, whereas local organisations are more reluctant to adopt such technology due to high maintenance costs. The implications of our study include the need to develop incentives to encourage technology adoption, to improve the capacity of local organisations and to establish better links between community organisations and local residents to identify sustainable financing (through crowdsourcing) for GIS applications to improve urban community governance. 相似文献
4.
刘天惠 《浙江海洋学院学报(人文科学版)》1994,(1)
仿效卡诺图设计了以异或门为基本电路的电路设计用图—异或图。期望能给异或门更广泛应用开辟道路,提供规范化设计方法。 相似文献
5.
国内外关于行业收入差距测度方法的研究,均通过构建一个相对指数来综合测度一国或一地区的收入差距问题,比如基尼系数、泰尔指数等,缺乏对行业内部的深入考察。行业收入差距四分图模型的建立,不仅可以综合比各地去行业收入差距问题,而且可以比较各行业地区间收入差距问题,同时,可以将各地区各行业造成整体收入差距的影响大小(贡献率)进行量化,更重要的是,可以将这种影响大小描绘到四分图模型中,进行可视化分析,直观而准确。 相似文献
6.
《三渠陈氏家园一览图记》是明代作家李梦阳的一篇散文作品,题目虽曰“图记”,但其旨在通过文字将平面的图画还原为立体的景观。描写景物力求如实,抒发情感真挚动人。且文字精简,不事雕琢,文风质朴却不失生动活泼之感。因为它是围绕一幅图画而作,所以过去的学者将其归为画记,但本文通过考察辨析,认为其应属一篇游记。 相似文献
7.
本文探讨平衡计分卡在社会服务组织中的应用,通过对机构内外环境的审视和分析,同时考量机构的使命、价值观和愿景,以平衡计分卡的顾客、内部流程、学习与成长和财务资源四个基本维度的平衡,来统筹设计机构的策略性目标。然后,将这些策略性目标串联起来而成为策略图,并为每项目标制订关键性表现指标、衡量方法、指标水平、以及行动计划,最终成为机构服务的表现蓝本。 相似文献
8.
In this article, we propose a new product positioning method based on the neural network methodology of a self‐organizing map. The method incorporates the concept of rings of influence, where a firm evaluates individual consumers and decides on the intensity to pursue a consumer, based on the probability that this consumer will purchase a competing product. The method has several advantages over earlier work. First, no limitations are imposed on the number of competing products and second, the method can position multiple products in multiple market segments. Using simulations, we compare the new product positioning method with a quasi‐Newton method and find that the new method always approaches the best solution obtained by the quasi‐Newton method. The quasi‐Newton method, however, is dependent on the initial positions of the new products, with the majority of cases ending in a local optimum. Furthermore, the computational time required by the quasi‐Newton method increases exponentially, while the time required by the new method is small and remains almost unchanged, when the number of new products positioned increases. We also compute the expected utility that a firm will provide consumers by offering its products. We show that as the intensity with which a firm pursues consumers increases, the new method results in near‐optimal solutions in terms of market share, but with higher expected utility provided to consumers when compared to that obtained by a quasi‐Newton method. Thus, the new method can serve as a managerial decision‐making tool to compare the short‐term market share objective with the long‐term expected utility that a firm will provide to consumers, when it positions its products and intensifies its effort to attract consumers away from competition. 相似文献
9.
陈玉云 《齐齐哈尔大学学报(哲学社会科学版)》2014,(5):177-179
为了增强学生的自主学习能力,中山大学南方学院对大学英语进行改革,推行了“三课堂”(真实课堂+虚拟课堂+社会课堂)教学模式。多年的改革成效明显,但改革过程中学生存在不同程度的适应问题,试图在“三课堂”教学模式中融入思维导图,培养学生成为真正自主学习者。 相似文献
10.
为了方便游客出行并且快速有效地获取广泛分布邯郸市的旅游景点信息,利用高德地图应用程序接口(API)提供的基本地图、位置搜索.周边搜索等功能,以及景点信息采集、景点信息查询、高德地图显示等主要技术,通过引入在线地图服务商的地图服务,与可视化级别将地理数据与旅游景点属性数据相结合,构建了基于开放地图API的WebGIS技术的邯郸市旅游景点信息共享展示及查询平台,并实现了邯郸市旅游景点查询过程的可视化。 相似文献