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Sökning: swepub > Umeå universitet > Engelska > Övrigt vetenskapligt/konstnärligt > (2010-2011)

  • Resultat 21-30 av 1080
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21.
  • Willander, Erika, 1978-, et al. (författare)
  • What is Sacred in a Space of Numbers?
  • 2011
  • Ingår i: Innovative Methods in the Study of Religion.
  • Bokkapitel (övrigt vetenskapligt/konstnärligt)
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23.
  • Andersson, Camilla, 1979- (författare)
  • Changing the risk at the margin : Smallholder farming and public policy in developing countries
  • 2010
  • Doktorsavhandling (övrigt vetenskapligt/konstnärligt)abstract
    • This thesis consists of a summary and four self-contained papers. Paper [I] examines whether the implementation of a social safety net programme in Ethiopia has affected the value, risk and composition of farmers‟ crop portfolios. The empirical analysis suggests that the value and risk of the crop portfolio have not been altered due to the programme. However, the programme seems to have brought about some changes in the land allocated to different crops. Paper [II] studies how a social safety net affects farmers‟ (dis)investments in productive assets. More specifically, it studies how the Productive Safety Net Programme in Ethiopia has changed livestock and tree holdings. The results indicate no significant effect on livestock holdings, but a significant increase in tree holdings. Paper [III] investigates if there is a problem of adverse selection in formal microlending in rural Bangladesh. The results indicate that farmers who only borrow formally have a shadow price of capital that is substantially higher than the average informal interest rate. This suggests that farmers that only borrow formally are perceived as poor credit risks by informal lenders. Paper [IV] explores the economic incentives surrounding the cultivation of opium poppy in Afghanistan. Specifically, it examines the impact of eradication policies when opium is used as a means of obtaining credit, and when the crops are produced in sharecropping arrangements. The results indicate that both these features are likely to affect the outcome of eradication policies.
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24.
  • Andrén, Daniela, et al. (författare)
  • 'Waiting for the other shoe to drop' : waiting for health care and duration of sick leave
  • 2010
  • Rapport (övrigt vetenskapligt/konstnärligt)abstract
    • This paper uses a labor supply model that incorporates waiting for health care to derive an empirical specification for sick leave and to estimate the impact of waiting for health care on the duration of sick leave. In the estimations, we use the 2002 sample of the RFV-LS register database, supplemented with information from questionnaires. The results indicate that almost all waiting for health care variables have a statistically significant positive impact on the duration of sick leave, and did not induce substantial changes on the impact of traditional variables of the labor supply model.
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26.
  • Babri, Maira (författare)
  • Studying codes as transforming objects
  • 2010
  • Konferensbidrag (övrigt vetenskapligt/konstnärligt)abstract
    • This paper addresses certain methodological aspects of a researchproject, in which an epistemological symmetry is assumed between humans and nonhumans,and this paper is about what implications and challenges such a premise mayentail for the data collection and analysis of the study. Although I adhere strongly to thenotion of epistemological symmetry in theory, there are certain aspects with such a studythat pose methodological challenges and this paper sheds light upon these challenges anddiscusses ways to deal with them. The major concern is retaining the epistemologicalsymmetry throughout the data collection and analysis of the study. This paperinvestigates the methodological aspects of a study on transformations of and by corporatecodes of ethics to analyze how corporate responsibility is influenced. The paper, henceexplores how we can, theoretically and practically, study a non-human actor (in this case,a code), with similar epistemological capabilities as a human actor, in a human-centeredworld.
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28.
  • Belyaev, Yuri K (författare)
  • Assessing accuracy of statistical inferences by resamplings
  • 2010
  • Ingår i: Mathematical and Statistical Models and Methods in Reliability. - New York : Birkhäuser Verlag. - 9780817649708 - 9780817649715 ; , s. 193-206
  • Konferensbidrag (övrigt vetenskapligt/konstnärligt)abstract
    • Suppose that a list of explanatory variables and corresponding random responses was obtained during a series of regression experiments. The characteristic of interest is the mean value of responses considered as a regression function of corresponding values of explanatory variables. For example, if responses are failure times of tested elements, then the conditional mean value of life time given the value of explanatory variable is one of the important reliability characteristics of the tested elements. The analysis of this type of data can be realized in the framework of linear heteroscedastic regression models. Here, one of the central problems is a consistent estimation of the unknown regression function when the size of data grows unboundedly. The problems related to analysis of regression data attracted many researches, see Wu [Ann. Statist. 14, 1261–1350 (1986)]. We give an approach to consistent solution of the problems under the assumption that values of explanatory variables are real numbers and the regression function is a polynomial with unknown degree and coefficients. The selection of regression function is based on resamplings from terms in the sum of the residuals estimated by the ordinary least squares method with various values of polynomial degree. In a similar way, resamplings from the weighted estimated residuals are used for consistent estimation of the deviations distributions of estimated coefficients from their true unknown values. The consistency of applied resamplings methods holds under certain assumptions, e.g. it is assumed that the residuals distributions have uniformly integrable second moments (assumption AW 2). Given in Appendix a variant of the Central Limit Resampling Theorem is used in the proofs of Theorems 1 and 2.
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29.
  • Bengtsson, Maria, 1959-, et al. (författare)
  • Coopetition : new ideas for a new paradigm
  • 2010
  • Ingår i: Coopetition Strategy. - Cheltenham : Edward Elgar Publishing, Incorporated. - 9781848443211 - 9781849807241 ; , s. 19-39
  • Bokkapitel (övrigt vetenskapligt/konstnärligt)
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  • Resultat 21-30 av 1080
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