基于RS的佛山市土地利用变化的时空特征研究

对1988，1999年佛山市两期TM遥感影像数据加以处理。分析了土地利用程度变化值和土地利用动态度。土地利用变化的时空特征表现为近10年来城市用地面积沿主要道路迅速扩展，导致水域，耕地和林地面积大量减少，城市用地矛盾日益突出。     

A NEW METHOD OF PRICING LOOKBACK OPTIONS

A new method for pricing lookback options (a.k.a. hindsight options) is presented, which simplifies the derivation of analytical formulas for this class of exotics in the Black-Scholes framework. Underlying the method is the observation that a lookback option can be considered as an integrated form of a related barrier option. The integrations with respect to the barrier price are evaluated at the expiry date to derive the payoff of an equivalent portfolio of European-type binary options. The arbitrage-free price of the lookback option can then be evaluated by static replication as the present value of this portfolio. We illustrate the method by deriving expressions for generic, standard floating-, fixed-, and reverse-strike lookbacks, and then show how the method can be used to price the more complex partial-price and partial-time lookback options. The method is in principle applicable to frameworks with alternative asset-price dynamics to the Black-Scholes world.     

艺术设计教育中的素描基础教学

艺术设计专业素描课教学,在重视传统素描基本功训练,强调对素描本身艺术语言研究的前提下,应重视创造性思维,加强对学生的主观创造性的培养.在对不同物象的情绪表达、抽象表达、意象创造、设计构想等美学范畴的思考和训练中,要以提高学生的形态审美能力、设计表达能力和创新思维能力为目标,达到更好地与设计专业课的衔接和过渡,使素描真正成为艺术设计的基础.     

基于VPX架构的无人机测控终端综合化开放平台技术

通过对无人机互通互联互操作等通用化测控系统的研究,提出了基于VPX架构的无人机测控终端综合化开放平台技术,通过采用标准化、通用化硬件模块,软件设计统一规范和标准,嵌入第三方软件,实现任务功能协同开发。该技术可以支持陆态、海态、陆海态等多种不同体制平台任务的任意加载,为实现地面站与地面站、地面站与舰面站、舰面站与舰面站之间的多站一机管控切换提供了有力支撑,有效增强了无人机系统跨域作战的能力。同时,系统能够满足无人机多类型、多型号不断扩展的需求,减少无人机测控装备种类,降低新型无人机系统装备建设成本,提升了无人机系统的生存性、灵活性和作战效能。     

Images paired with concrete claims improve skeptical consumers’ responses to advertising promoting a firm’s good deeds

Previous research has focused attention on state skepticism over corporate social responsibility (CSR) communications, but little work has focused on how to override preexisting differences in consumer skepticism. To gain insight into this issue, the present studies explore whether company ads promoting a firm’s good deeds generate more positive responses when the ads contain concrete claims and/or images related to the firm’s corporate social responsibility claims, and how these elements of the CSR communication interact with individual differences in advertising skepticism. Results show that highly skeptical consumers (a) respond less favorably to ads than less skeptical consumers, overall; (b) respond more favorably to ads that contain a combination of concrete claims and images supporting those claims; and (c) respond as favorably as less skeptical consumers when ads feature concrete claims with supporting images. Additional results suggest that images are effective among highly skeptical consumers because skeptical consumers have a reduced ability to visualize advertising claims. Implications and future research directions are discussed.     

Optimal monetary policy and the role of hybrid inflation-price-level targets

This study investigates the role of hybrid inflation-price-level targets as a solution to the well-known stabilization bias problem that arises under discretionary policies. The analysis shows that social welfare will be improved by employing a weighted average of inflation and price level as one of the central bank's target variables in addition to the output gap growth target. The reason is that imposing the optimal hybrid target will reduce inflation variability in a highly efficient way. In particular, the optimal hybrid regime outperforms other previously suggested regimes when the degree of inflation persistence is moderate.     

Global trauma and public feelings: Viewing images of catastrophe

Scholars have begun to discuss new digital viewing contexts, but few have explored processes involved in responding to images of catastrophe. Many assume that cognition (meaning) is primary in image‐reception, but I’ll show the complex interaction of cognition and affect. Drawing on research in psychology and cultural studies, I explore how proliferation of images may produce a culture of trauma. I define, analyze and critique three kinds of possible response to images of catastrophe. These are: a) secondary or vicarious trauma (VT), a response in which the viewer is shocked to the extent of being emotionally over‐aroused; b) what I call “empty empathy,” to indicate the fleeting nature of empathic emotions that viewers often experience; and finally c) witnessing – a response that transforms the viewer in a positive pro‐social manner, and that, unlike the first sorts of response, involves ethics along with empathy. The argument is supported by images drawn from the war in Iraq, Hurricane Katrina and recent art by Witkin and Harden.     

Ad scepticism and retouch-free disclaimers: Are they worth it?

Abstract

The present study analyses the impact of ad scepticism on the way consumers perceive advertising and process its effects, and considers the influence of ad disclaimers. We conduct an experiment that explores three different contexts, namely (1) the total absence of ad disclaimers, (2) the presence of a retouch-free disclaimer and (3) the presence of a retouched disclaimer. By showing how ad scepticism fits in the advertising attitudinal approach, and how new digital developments affect consumers’ processing of advertisements, the results of this experiment can contribute to the marketing literature and clarify relevant topics for practitioners. This paper shows the significant influence played by ad believability and attitude towards the ad on behavioural intentions. This underlines, particularly for marketing practitioners, the importance of an ad’s believability and the credibility of its claims in the sales outcome. Most importantly, the framework offered by this paper shifts the attention towards the believability of advertising disclaimers aimed at clarifying the use of digitally enhanced images.     

多媒体技术特征与关键技术分析

多媒体凭借着自身的优势越来越被受到广泛关注和应用,已经在不知不觉中影响到了我们生活的很多方面,本文简要介绍了计算机多媒体技术的概念、特征,分析了几种多媒体计算机的关键技术。     

The e-mediated (Google Earth) gaze: an observational and semiotic perspective

This paper provides an observational and introductory semiotic analysis of the sharing of recorded images through Google Earth to provide a benchmark against conventional imagery, based upon a theoretical discourse, and to question the changing nature of image recording and sharing and of the consequential constructions of a place that occur. It gives consideration to the complex sociological relationships between new technologies and the ability to now view destinations online, with photos, street views and a myriad range of information sources. Many photos are shared by tourists, and many by local people, and there are contested constructs of the destination image as a result.