Realized variance, being the summation of squared intra-day returns, has quickly gained popularity as a measure of daily volatility. Following Parkinson [1980. The extreme value method for estimating the variance of the rate of return. Journal of Business 53, 61–65] we replace each squared intra-day return by the high–low range for that period to create a novel and more efficient estimator called the realized range. In addition, we suggest a bias-correction procedure to account for the effects of microstructure frictions based upon scaling the realized range with the average level of the daily range. Simulation experiments demonstrate that for plausible levels of non-trading and bid–ask bounce the realized range has a lower mean-squared error than the realized variance, including variants thereof that are robust to microstructure noise. Empirical analysis of the S&P500 index-futures and the S&P100 constituents confirms the potential of the realized range. 相似文献
Customer loyalty is viewed as the strength of the relationship between an individual’s relative attitude and repeat patronage.
The relationship is seen as mediated by social norms and situational factors. Cognitive, affective, and conative antecedents
of relative attitude are identified as contributing to loyalty, along with motivational, perceptual, and behavioral consequences.
Implications for research and for the management of loyalty are derived.
His research interests include consumer decision making, information processing, and consumer loyalty. He has published in
theJournal of Consumer Research andAdvances in Consumer Research.
His research interests are consumer information processing, persuasion cues in advertising, and international marketing. His
articles have appeared in theJournal of Consumer Research, Journal of Marketing Research, Journal of Consumer Psychology, andCanadian Journal of Administrative Sciences as well as in a number of conference proceedings. 相似文献
Leon A. Mears, The New Rice Economy of Indonesia, Yogyakarta: Gadjah Mada University Press, 1981, pp. xxiii + 605. Price US$15.
Alfian, Mely G. Tan, Selo Soemardjan (eds). Kemirkinan Struktural: Suatu Bunga Rampai (Structural Poverty: A Collection). Jakarta: Yayasan Ilmu-Ilmu Sosial (YIIS), 1980. pp. 189. Rp 2000.
Thee Kian Wie, Pemerataan- Kemiskinan- Ketimpangan (Equalization-Poverty-Uneven Distribution), Jakarta: Sinar Harapan. 1981, pp. 152. Rp 1750.
Bulletin Leknns, Year 1 No. 2, Feb. 1982, Special Edition on Employment Opportunity, Poverty and Population Mobility in Rural Areas, pp. 146.
Mubyarto (ed.), Growth and Equity in Indonesian Agricultural Development, Jakarta: Yayasan Agro Ekonomika, 1982. pp. xv + 258.
Muriel Charras, De la forêt malefique à I'herbe divine [From Malign Jungle to Divine Grain]: La transmigration en Indonesie: Les Balinais a Sulawesi, Paris: Editions de la Maison des sciences de I'homme 1982, pp, viii + 341. Price Fr. 90.00.
Yujiro Hayami and Masao Kikuchi. Asian Village Economy at the Crossroads: An Economic Approach to Institutional Change, Tokyo: University of Tokyo Press, 1981, pp. xvi + 275. Yen 4000. Geoffrey B. Hainsworth (ed.), Village-level Modernization in Southeast Asia: The Political Economy of Rice and Water. Vancouver: University of British Columbia Press. 1982. pp. ix + 411. Can$34.00.
Colin MacAndrews and Chia Lin-Sien (eds.). Too Rapid Rural Development: Perceptions and Perspectives from Southeast Asia, Athens: University of Ohio Press, pp. xiv + 369. Cloth $19.95, paper $10.95.
Gary E. Hansen (ed.), Agricultural and Rural Development in Indonesia, Boulder, Colorado: Westview Press, 1981, pp. xiv + 312.
William L. Collier, Declining Labour Absorption (1878 to 1980) in Javanese Rice Production, Bogor: Agro-economic Survey, Rural Dynamics Study, Publication No. 2, 1980, pp. 120. 相似文献
Monetary budgets influence activity participation and related travel as they demarcate limits on how people organize their activities in time and space. In this paper, we are interested in money allocation to out-of-home leisure activities and how this is affected by duration, sociodemographics, and time-location variables. Analyses were carried out by applying a seemingly unrelated regression model to a leisure activity data set. The analyses revealed that expenditures for out-of-home leisure activities are influenced by the variables mentioned above. Moreover, the results indicate that there is a substitution between expenditure of each activity. 相似文献
In this paper unit-root tests for per capita output of 12 OECD countries are performed. Using traditional unit-root tests, it follows that the unit-root hypothesis cannot be rejected except for the US. However, following the approach of Perron (1989), which takes shifts in mean and/or trend into account, the null hypothesis of a unit-root can be rejected in most countries in our sample. In contrast to Perron, a method suggested by Christiano (1992)is used to determine the break date endogenously. 相似文献
Two important empirical features of US unemployment are that shocks to the series seem rather persistent and that it seems to rise faster during recessions than that it falls during expansions. To jointly capture these features of long memory and nonlinearity, we put forward a new time series model and evaluate its empirical performance. We find that the model describes the data rather well and that it outperforms related competitive models on various measures of fit. 相似文献
A golden statue of a winged youth once perched on the roof of AT&T's old headquarters. But when AT&T lowered the 24-foot-high statue for regilding so that it could be placed in the company's new headquarters, the chairman was shocked to discover that the figure was anatomically correct. So he decreed that it also be gelded. The altered "Golden Boy" thus became a metaphor for AT&T's recent embattled history, and it serves as a cautionary symbol for all companies operating in today's brutal business environment, where perception can be as important as reality. While image consultants and executives work to gild a company's image, special interest groups and the media can geld a company with countless little cuts. The author, a former executive vice president of public relations for AT&T, provides an insider's view of some of the company's most painful public-relations scrapes. They include the collapse of two apparent CEO succession plans, AT&T's inability to meet heightened expectations after Mike Armstrong was appointed CEO, and the racially charged furor over a cartoon in an employee publication. The author offers four lessons: Don't become hypnotized by your own buzz; understand the way the business media think; address the needs of all your stakeholders; and be sensitive to the possible emotional resonance of what appear to be straightforward facts. To illustrate the final point, the author mentions AT&T's elimination of 40,000 jobs in 1996. Wall Street was impressed, but NBC's Tom Brokaw said the workforce reduction might signal "another long, anxious year for the American middle class." No rational argument from AT&T could overcome the layoffs' symbolic impact. Wounded but wiser after numerous public-relations battles, the company eventually learned to stop aggregating job-reduction information for the media. 相似文献