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121.
Milan Jovanović 《统计学通讯:模拟与计算》2017,46(4):3050-3066
This article deals with the estimation of R = P{X < Y}, where X and Y are independent random variables from geometric and exponential distribution, respectively. For complete samples, the MLE of R, its asymptotic distribution, and confidence interval based on it are obtained. The procedure for deriving bootstrap-p confidence interval is presented. The UMVUE of R and UMVUE of its variance are derived. The Bayes estimator of R is investigated and its Lindley's approximation is obtained. A simulation study is performed in order to compare these estimators. Finally, all point estimators for right censored sample from the exponential distribution, are obtained. 相似文献
122.
Parimal Hor 《统计学通讯:模拟与计算》2017,46(3):2447-2456
In many industrial and natural phenomena, we need the probability that a component is smaller than the other component. Under a stress–strength model, this is reliability of an item. Under independent setup, there are different approaches for the estimation of such reliability. Here, estimation is considered under the dependent case. Under bi-variate setup uniformly minimum variance unbiased estimator is obtained. Also comparison with available estimator based on Maximum Likelihood Estimate (MLE) is done through Mean Square Error (MSE) and bias. Also these are compared by computing L1 distance between their distribution functions. From this idea and numerical computations, UMVUE appears to be good. 相似文献
123.
Here, we consider a generalized form of the alternative zero-inflated logarithmic series distribution of Kumar and Riyaz (J. Statist. Comp. Simul., 2015) and study some of its important aspects. The parameters of the distribution are estimated by the method of maximum likelihood and some test procedures are developed for testing the significance of the additional parameter of the model. All these estimation and testing procedures are illustrated with the help of certain real life datasets. A simulation study is also carried out for assessing the performance of the estimators. 相似文献
124.
Turing's formula is an amazing result that allows one to estimate the probability of observing something that has not been observed before. After a brief review of the literature, we perform a simulation study to better understand how well this formula works in a variety of situations. We also compare the performance of Turing's formula with several modifications that have appeared in the literature. We find that these modifications tend to outperform Turing's formula, but usually not by very much. We further find that Turing's formula and its modifications tend to work better for heavy-tailed distributions than for light-tailed ones. 相似文献
125.
Katrin Tiidenberg 《Feminist Media Studies》2018,18(1):61-76
AbstractThis article explores visual discourses about over-40 and over-50 femininities that emerge from women’s own Instagram accounts. It analyses women’s visual and textual rhetoric of what over-40 and over-50 looks like, and whether it could interrupt the ageist, sexist, and body-normative discourses of female ageing and visibility. Intertextual visual discourse analysis of images, captions, and hashtags reveals two dominant themes (fitness and fashion) and two repeating rhetorical elements (motherhood and self-sufficiency) through which women make themselves visible as over-40/50. A few explicitly subversive discourses (i.e., over-40 fatshion account) exist, but a discourse of a healthy, fit, fashionable, independent, self-sufficient, and happy mother over-40/50 is prevalent. It easily lends itself to being interpreted as an insidious reproduction of post-feminist ideology, but I argue that there are moments of critique and subversion within. Thus, a reparative reading that acknowledges moments of disconnect from the discourse that normalizes ageing women’s limited or non-existent visibility is offered. 相似文献
126.
Jane Warland Pauline Glover 《Women and birth : journal of the Australian College of Midwives》2017,30(1):23-28
Problem
Information that women receive about the importance of monitoring fetal movements and what to do if there are changes is inconsistent and may not be evidence based.Background
This paper reports a summary of the kind of messages a group of South Australian midwives (n = 72) currently give pregnant women.Methods
Comment data from two questions in a larger survey asking (1) what information midwives routinely provide to women about fetal movements and (2) their practice regarding advice they give to women reporting reduced fetal movements. Data were analysed using summative content analysis.Findings
Four main recurring words and phrases were identified. With respect to information midwives give all women about monitoring fetal movements, recurring words were “10”, “normal”, “kick charts” and “when to contact” their care-provider. Recurrent words and phrases arising from answers to the second question about advice midwives give to women reporting reduced fetal movement were “ask questions,” “suggest fluids,” “monitor at home and call back” or “come in for assessment”.Discussion
These findings suggest that a group of South Australian midwives are providing pregnant women with inconsistent information, often in conflict with best practice evidence.Conclusion
As giving correct, evidence based information about what to do in the event of an episode of reduced fetal movement may be a matter of life or death for the unborn baby it is important that midwives use existing guidelines in order to deliver consistent information which is based on current evidence to women in their care. 相似文献127.
Dana Oprica 《Intercultural Education》2016,27(1):111-116
Due to the great number of Romanian pupils in Spanish public school, the local administration organises extra-curricular Romanian courses in order to preserve the Romanian language and culture. This is a way to contribute to build and consolidate a bicultural and bilingual profile of the young people. Besides, it is also an opportunity to align with plurilingual and pluricultural competence established by The Common European Framework of References for Languages (2002). Based on the premise that “children's literature is an intercultural instrument”, I choose as corpus the Romanian children's folklore represented by games, formula-songs, recital-stories, household words, incantations, riddles and lullabies to translate into Spanish. After the translations, Romanian children had to find similarities and differences between the Romanian and Spanish children's songs, in order to augment the knowledge about both cultures. 相似文献
128.
Research examining parental reports of children's living arrangements has often relied on information about legally ordered custody agreements following divorce. This analysis used data from matched pairs of parents (N = 1,156) in the Fragile Families and Child Wellbeing Study who live apart to compare mother and father reports of their child's residence 5 years after a nonmarital birth. The authors found that over one third of unmarried parents disagreed about who their child lived with and that conflicting reports were much more likely when fathers spent nights with the mother (an indicator of part‐time cohabitation) and had overnights with the child on their own. The results further suggest that discrepancies in unmarried parents' reports were more closely associated with the complexity and ambiguity of their living situations than with the quality of their relationships with each other. Implications for measuring children's living arrangements in families formed outside of marriage are discussed. 相似文献
129.
130.
Dave Calvert 《Disability & Society》2014,29(1):101-114
Susan Boyle’s audition for the television talent competition Britain’s Got Talent attracted global attention and widespread media discourse. In this article, I would like to examine this discourse to consider how Boyle’s success troubles conventional constructions of both learning disability and celebrity.
I extend Ciara Evans’s recognition that learning disability is invisible to reflect on the media responses to Boyle’s impairment. This reflection notes that even within Boyle’s own discourse, she is loosely positioned as having ‘some sort of learning disability’.
Detailed attention is given to the aetiological account of the ‘brain damage’ Boyle ‘suffered’ at birth. The analysis will consider the correlation with scientific discourse, trauma theory and the imposed biography to suggest that the construction of Boyle as both contained and unpredictable is already implicit in the aetiological narrative. 相似文献