参数微调法控制混沌

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。     

论含约束项的降维卡诺图

对含约束项的逻辑函数的一般表达式和卡诺图表示法进行了分析和比较，导出含约束项的降维卡诺图。通过实例分析，讨论了其填写与读出的方法，并归纳出含约束项的降维卡诺图填写与读出规则，该规则可简化实用电路。     

“神性”与“人性”的统一——元代永乐宫壁画与道教美学

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。     

Strengthening urban community governance through geographical information systems and participation: An evaluation of my Google Map and service coordination

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.     

异或逻辑门电路设计用图“异或图”

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。     

行业收入差距的四分图模型测度方法研究

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。     

李梦阳《三渠陈氏家园一览图记》的文体性质及特色

《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。     

Product Positioning Using a Self‐Organizing Map and the Rings of Influence

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.     

思维导图融入大学英语“三课堂”教学模式研究

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。     

平衡计分卡在社会服务组织应用的探索

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。