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981.
This commentary addresses Olivola and Todorov’s “Elected in 100 ms: Appearance-Based Trait Inferences and Voting” and considers
its valuable contribution to the field of nonverbal communication. This work suggests that contemporary politics and voting
behavior are so complex that they can be better understood outside of laboratory settings where the vital elements on culture
and context come into play. By using consumer culture theory and other cultural theories of branding, this commentary evaluates
elements of Barack Obama’s presidential run, and considers why his campaign resonated so well with voters in contemporary
United States culture. 相似文献
982.
In panel studies on sensitive topics, respondent-generated identification codes are often used to link records across surveys. However, usually a substantial number of cases are lost due to the codes. These losses may cause biased estimates. Using more components and linking the codes by the Levenshtein string distance function will reduce the losses. In a simulation study and two field experiments, the proposed procedure outperforms the methods previously applied. 相似文献
983.
Ulla Hellström Muhli 《Journal of Aging Studies》2010,24(1):47-56
This article describes need assessment dialogues, the circumstances surrounding care, and the provision of residential care and in-home support for the elderly in Sweden, as seen from a communicative perspective. The purpose was to systematically describe and analyse the accounts of welfare officers concerning elderly care. The research questions were: How is the internal care context perceived and constituted through discourse? How do welfare officers manage the daily demands, expectations, tasks, and dilemmas in the encounter with the individual citizen? What significance do the welfare officers give their work and their professional tasks?Eleven interviews with welfare officers from elderly and handicapped care organisation of three municipalities were held, and a discursive analysis was made from the collected data. Four characteristic discursive phenomena in the welfare officers' accounts were observed: (I) the rights of the elderly, (II) living at home, (III) good relations, and (IV) the complaisance. The study shows that the dialogues with elderly contain communicative dilemmas and mixed loyalties. The welfare officers navigate between different perspectives and double approaches. She/he uses the navigating as a strategy and proficiency in their work. However, these proficiencies remain largely unnoticed and unreflected as techniques, strategies, or tools for attaining favourable care. 相似文献
984.
In affluent societies how people use technology is symbolic of various values and identities. This article investigates the symbolic values and use of assistive technologies from the world of information and communication technology (ICT) in the daily lives of 11 visually impaired young Norwegians. The article draws on a qualitative interview study and employs an interactionist approach. While the use of ICT is found to symbolise competence, belonging and independence, the use of ICT assistive technologies is found to symbolise restriction, difference and dependency. Thus, ICT and ICT assistive technologies have inherently contradictory sets of associations. To fit in as ordinary young people the visually impaired participants reject ICT assistive technologies whenever possible. The partially sighted participants who are somehow capable of participating in online interactions with their peers without ICT assistive technologies reject them. The blind participants, however, do not have the option of participating online without ICT assistive technologies and, consequently, they accept ICT assistive technologies. 相似文献
985.
Leonid V. Azarnert 《Journal of Economic Inequality》2010,8(1):23-33
This paper analyzes the effect of juvenile imprisonment on educational investment incentives. The model shows that if some
adolescents are likely to be in trouble with law, their chances to complete education and thus the expected value of investment
in their human capital are negatively affected. As a consequence, their parents not only optimally invest less in the offspring’s
education but also give birth to more children. The analysis helps to understand why some minority groups who for exogenous
reasons are more likely to be convicted of crime exhibit higher reproduction rates and lower levels of education. It also
demonstrates that prison education may have unintended adverse consequences. 相似文献
986.
V. V. Chari Patrick J. Kehoe Ellen R. Mcgrattan 《Econometrica : journal of the Econometric Society》2000,68(5):1151-1179
We construct a quantitative equilibrium model with firms setting prices in a staggered fashion and use it to ask whether monetary shocks can generate business cycle fluctuations. These fluctuations include persistent movements in output along with the other defining features of business cycles, like volatile investment and smooth consumption. We assume that prices are exogenously sticky for a short time. Persistent output fluctuations require endogenous price stickiness in the sense that firms choose not to change prices much when they can do so. We find that for a wide range of parameter values, the amount of endogenous stickiness is small. Thus, we find that in a standard quantitative model, staggered price‐setting, alone, does not generate business cycle fluctuations. 相似文献
987.
A standby service option allows a firm to lower its risk of not having sufficient capacity to satisfy demand without investing in additional capacity. Standby service options currently exist in the natural gas, electric, and water utility industries. Firms seeking standby service are typically large industrial or institutional organizations that, due to unexpectedly high demand or interruptions in their own supply system, look to a public utility to supplement their requirements. Typically, the firm pays the utility a reservation fee based on a nominated volume and a consumption charge based on the volume actually taken. In this paper, a single‐period model is developed and optimized with respect to the amount of standby capacity a firm should reserve. Expressions for the mean and variance of the supplier's aggregate standby demand distribution are developed. A procedure for computing the level of capacity needed to safely meet its standby obligations is presented. Numerical results suggest that the standby supplier can safely meet its standby demand with a capacity that is generally between 20 to 50% of the aggregate nominated volume. 相似文献
988.
989.
This study examines extensions of McNemar's Test with multinomial responses, and proposes a linear weighting scheme, based on the distance of the response change, that is applied to one of these extensions (Bowker's test). This weighted version of Bowker's test is then appropriate for ordinal response variables. A Monte Carlo simulation was conducted to examine the Type I error rate of the weighted Bowker's test for a cross-classification table based on a five-category ordinal response scale. The weighted Bowker's test was also applied to a data set involving change in student attitudes towards mathematics. The results of the weighted Bowker's test were compared with the results of Bowker's test applied to the same set of data. 相似文献
990.
Asymptotically optimal Berry-Esseen-type bounds for distributions with an absolutely continuous part
Michael V. Boutsikas 《Journal of statistical planning and inference》2011,141(3):1250-1268
Recursive and closed form upper bounds are offered for the Kolmogorov and the total variation distance between the standard normal distribution and the distribution of a standardized sum of n independent and identically distributed random variables. The method employed is a modification of the method of compositions along with Zolotarev's ideal metric. The approximation error in the CLT obtained vanishes at a rate O(n−k/2+1), provided that the common distribution of the summands possesses an absolutely continuous part, and shares the same k−1 (k?3) first moments with the standard normal distribution. Moreover, for the first time, these new uniform Berry-Esseen-type bounds are asymptotically optimal, that is, the ratio of the true distance to the respective bound converges to unity for a large class of distributions of the summands. Thus, apart from the correct rate, the proposed error estimates incorporate an optimal asymptotic constant (factor). Finally, three illustrative examples are presented along with numerical comparisons revealing that the new bounds are sharp enough even to be used in practical statistical applications. 相似文献