客户体验呼唤优化升级

1个数据和100万个数据的力量孰大孰小?这里可以做一个分析:假如我们彻底湮没在100万个数据的海洋里,无法辨别数据的真伪和价值,其意义何从谈起?相反,如果那个唯一的数据能帮助我们快速搜索到目标对象,或者充分支持我们的判断,那么它的地位则不言自明.     

Some future scenarios for renewable energy

Energy security issues, climate change, fossil fuel depletion, new technologies, and environmentally conscious consumers are powerful forces shaping the renewable energy sector. The future of renewable energy depends upon how powerful these forces are and which combination of forces prevails. This paper defines and analyzes four different scenarios, business as usual (2010–2030), focus on climate change (2010–2060), focus on energy security (2010–2030), and a clean and secure energy future (2010–2100) for the future of renewable energy. A clean and secure energy future, where renewable energy accounts for between 50% and 80% of total energy demand, is the most favorable scenario for the future of renewable energy but also the scenario that takes the greatest amount of commitment, in terms of time and money from businesses, individuals, governments, and policy makers.     

The future of the motorcar: Alternative scenarios

In contrast to conventional forecasts usually based on constant cost projections, the author considers the future of the motorcar as depending on dynamic changes in the pattern of costs and values related to private car ownership and use. The social, environmental, material and technological factors most influencing the future cost of motoring are analysed, and desirable policies are examined. The results are projected into two scenarios, high and low, of the future conditions for private motoring. The analysis is focused on the Netherlands, but is generally applicable to other Western European countries.     

The financial system matters: future perspectives and scenarios for a sustainable future

D. Meadows considered in his report ‘limits of growth’ the financial system as a neutral accounting system and came to a pessimistic view. But the money-system itself creates several side effects and distorts our economic system right from the beginning. The money-system is not neutral. New scenario modelings considering the financial system can come to a positive perspective. Three from six systematically developed scenarios include paths to different kinds of sustainability. From a systemic view, the combination of conventional and complementary solutions can provide a substantial contribution towards a sustainable future.     

Regions and French society: Three scenarios of the future

This paper is a translated version of the résumé, “Territoires et société”, of the report presented to the Budapest UN ECE seminar on long-term perspectives for human settlements development.     

Narratives of the future: Suspending disbelief in forest-sector scenarios

Scenario analysis considers highly uncertain future conditions. The method involves developing and analyzing plausible narratives of the future and evaluating them for a range of implications. The power of scenarios lies in creating and considering compelling stories about the future. Thus, narrative, defined as an account of a series of events, is central to the process and plays a pivotal role in engaging participants in a scenario analysis exercise. While a good scenario story can engage individuals and influence their suspension of disbelief, we know little about how participants actually respond to the scenarios so they can, and will, suspend disbelief in scenario outcomes.We explored the role of narrative in suspension of disbelief in a scenario-based study of the long-term future of Canada's forests and forest sector. We discovered that specific aspects of the scenario narratives themselves influenced participants’ suspension of disbelief. While interacting with the scenario narratives, participants actively worked to suspend disbelief by creating new narratives or accessing other existing ones, and by projecting themselves into the scenarios as characters in the stories. Our results may help scenario writers, practitioners, and researchers understand what, in one project, cued people's abilities to suspend disbelief and engage productively in discussions about possible futures.     

Images of the future: a historical perspective

In an attempt to create a futures philosophy, this paper analyzes and critiques Fredrich Polak’s Image of the future, a philosophy of history that contends that the image of the future of a society or culture defines a particular era and is the key to understanding of the rise and fall of civilizations. Polak’s view is compared with J.B. Bury’s ideas expressed in The idea of progress. The paper also illustrates how Max Weber’s The protestant ethic and the Spirit of capitalism contributes to an understanding of the progressive image of the future which, along with utopian images of the future, composes the dialectic of futures images. It shows how progressive and utopian images of the future have been expressed in dialectical world history and how they are still relevant today to serve as an insight for prognosis. Finally, it examines and answers Polak’s charge that existentialism is the cause for the destruction of the modern image of the future.     

Evaluation of infrastructure planning approaches: An analogy with medicine

This paper discusses the evaluation of new infrastructure planning approaches. These new planning approaches have been put forward in response to the challenges of deep uncertainty about the future. These approaches emphasize the need for flexibility of the system in order to enable the plan to adapt to changing conditions. However, these adaptive approaches up till now have seen little real word applications. One important reason for this lack of application is that the efficacy of these approaches has not been established yet. In turn, this is largely due to the problem that there is no agreed upon method for proving the efficacy of a new planning approach. In this paper, we will draw an analogy to medical research and development in order to outline a methodology for establishing the efficacy of new planning approaches. We discuss how the well-established methodology for evaluation new medical treatments can be adapted to evaluating new planning approaches. We illustrate the resulting evaluation methodology by outlining an evaluation strategy for a specific new planning approach. It is concluded that the well-established methodology from medicine can successfully be used to inform the evaluation of infrastructure planning approaches.     

Housing prices and flood risk: An examination using spline regression

This article examines the impact of flood risk and mandatory flood insurance on property values. Using a large data set of almost 2,000 homes sold in the New Orleans, Louisiana, area from 1971 through 1986, the analysis confirms the finding of earlier studies that location in a floodplain does reduce property values. The present study, using spline variables to adjust for locational variation in the data and an improved measure of insurance cost, reveals that much of this reduction can be attributed to mandatory flood insurance coverage. Moreover, while unexpected flooding does increase the insurance cost capitalization, repeated flooding does not seem to reduce property values further.     

Bounding the future: The use of scenarios in assessing climate change impacts

This paper investigates the contribution of socio-economic scenarios to improve decisions and policies in climate assessments. We specifically looked at adaptation projects in the Dutch Climate changes Spatial Planning programme. Based on the four decision failure criteria neglect of internal information, bounded rationality, insufficient expansion of existing mental models and stickiness and lack of friction of information and knowledge, it was concluded that in these projects, socio-economic scenarios appear to generate useful data, but that their full potential to reduce decision failure is not likely to be exploited. Therefore adaptation options suggested by these studies may not be ‘future-proof’: they may be appropriate in some future societies, but fail in others. We believe similar results would be obtained in other contexts. Possible decision failures are caused by neglecting socio-economic developments, limiting the number of storylines generated by scenario studies to one or two, lack of stakeholder involvement in the scenario development and ignoring discontinuities.     

Comparability: An analytic examination

Comparability is often invoked as an evaluative criterion in regulatory and financial reporting controversies. This article explores the issue by first developing a formal model of comparability that is consistent with the prior information economics literature regarding normative criteria. This model is then used in a restricted setting to explore how such criteria might eventually be used to establish preference relationships.     

An historical perspective on governmental accounting education

This paper presents a senior governmental accounting educator’s perspectives on how governmental accounting education has changed over the past 35 years and what we can expect for the future. Having begun my academic career during the 1970s, a period of turmoil and debate about the deficient state of governmental accounting, I look at how events of this period influenced my personal decision to specialize in governmental accounting education and how those events led to a path of dramatic improvement in governmental accounting standards, practice, and education. Key trends in governmental accounting education are discussed along with major changes in practice guidance over the years that have challenged textbook authors and faculty in staying abreast of change. The paper identifies many governmental accounting educators who have made significant contributions to governmental accounting and auditing policy and encourages current educators to seek ways to participate in the policy-making process. Finally, the paper discusses the future outlook for governmental accounting education and concludes that governmental accounting educators are well positioned to contribute to achieving the recently released recommendations of the Pathways Commission (2012).     

An examination of nonlinear dependence in exchange rates,using recent methods from chaos theory

Interest in the relevance of nonlinear dynamics to finance and economics has spurred the evolution of new ways to analyze time series data. Tests for chaos, based on a metric approach which measures spatial correlations, led to the development of the correlation dimension test for chaos and the BDS test for nonlinearity. More recently, a topological method has been introduced into the scientific literature which employs a simple qualitative test for chaos that is adaptable to the characteristics of financial data. A quantitative version is also presented here. Conflicting evidence exists about the presence of chaotic behavior in exchange-rate data. The qualitative topological test does not support evidence of a chaotic generating mechanism in these series. The quantitative form finds nonlinear dependence and is a useful diagnostic to determine the adequacy of ARCH-type models for this nonlinear structure.     

An examination of market efficiency around hurricanes

Hurricane Andrew produced more than $21.5 billion in property damage in Florida and Louisiana. Hurricane Hugo caused about $7 billion in damage in North and South Carolina. Although both hurricanes were large, the magnitudes of their destruction and the geographic concentrations of their paths were markedly different. This study finds that Hugo and Andrew produced substantially different market reactions on property and casualty (P&C) firms. The industry was generally unaffected by Hugo, regardless of whether or not firms had exposure in the Carolinas. Andrew, on the other hand, generated a significant negative impact on firms with exposure in Florida or Louisiana. Other firms were not effected by Andrew. These observations indicate that the market demonstrated an ability to discriminate by the magnitude of hurricane and by P&C firms based on their degree of loss exposure.     

An examination of IPO secondary market returns

IPO stock prices increased approximately 2.3% on the first day of secondary market trading over the period 1993 through 2003. While these aftermarket returns are accentuated during 1999 and 2000, they persist after the bubble burst and even increase as a percentage of total underpricing. We explore several non-mutually exclusive hypotheses to explain our findings including price support, laddering, retail sentiment, and information asymmetry. Our results are most consistent with the view that higher secondary market returns accrue to IPOs with more information asymmetries possibly due to price and aggregate demand uncertainty.     

An examination of CEO compensation of US banks and thrifts using non-traditional performance measures: 1997–2001

This study compares the compensation of chief executive officers (CEOs) of banks and thrifts in the United States, during the 1997–2001 period. The authors examine the effect of traditional industry measures (such as the value of long-term incentive plans) and non-traditional measures (such as the ploughback ratio), on CEO compensation. The results of Exploratory Factor Analysis indicate that many of these measures are highly correlated and are likely to lead to serious problems of multicollinearity in multiple regression models of compensation. The authors find a crude difference (univariate) in compensation between CEOs from both types of institution. Using a multiple regression model, however, it is found that this discrepancy can be attributed to differences in traditional and non-traditional measures of performance between the two types of institutions. The results add to existing literature of bank CEO compensation by examining non-traditional measures of performance.     

Nonlinear market liquidity: An empirical examination

We offer novel indicators of market-wide liquidity. Previous literature uses averages of individual liquidity indicators to track the evolution of market-wide liquidity. Instead, we focus on the tails of the market liquidity distribution. First, we construct aggregate liquidity indicators using low and high quantiles of six liquidity measures (total volume, number of trades, effective spread, realized spread, price impact and lambda). Our results show that market conditions have an asymmetric impact on the tails of the liquidity distribution. In the second part of the study, we test for nonlinearity of the effects of market determinants on market liquidity.