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71.
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Improved two phase sampling exponential ratio and product type estimators for population mean using known coefficient of variation of study character in the presence of non response have been proposed and their properties are studied under large sample approximation. The proposed estimators are compared with the other existing estimators by using the MSE criterion and the conditions under which the proposed estimators perform better are obtained. An empirical study is also given to judge the performance of the proposed estimators. At the end, simulation studies have been carried out to verify the superiority to the proposed estimators. 相似文献
73.
Mohammed Chowdhury Colin Wu Reza Modarres 《Journal of Statistical Computation and Simulation》2017,87(15):2900-2914
Nonparametric estimation and inferences of conditional distribution functions with longitudinal data have important applications in biomedical studies, such as epidemiological studies and longitudinal clinical trials. Estimation approaches without any structural assumptions may lead to inadequate and numerically unstable estimators in practice. We propose in this paper a nonparametric approach based on time-varying parametric models for estimating the conditional distribution functions with a longitudinal sample. Our model assumes that the conditional distribution of the outcome variable at each given time point can be approximated by a parametric model after local Box–Cox transformation. Our estimation is based on a two-step smoothing method, in which we first obtain the raw estimators of the conditional distribution functions at a set of disjoint time points, and then compute the final estimators at any time by smoothing the raw estimators. Applications of our two-step estimation method have been demonstrated through a large epidemiological study of childhood growth and blood pressure. Finite sample properties of our procedures are investigated through a simulation study. Application and simulation results show that smoothing estimation from time-variant parametric models outperforms the existing kernel smoothing estimator by producing narrower pointwise bootstrap confidence band and smaller root mean squared error. 相似文献
74.
Mohammed Mohammed El Genidy 《统计学通讯:理论与方法》2017,46(16):7969-7975
Since many years scientists have carried out researches about bird migration, but due to the large number of bird types estimated at around 10,000 in the world, it is not easy to predict the maximum number of migratory bird types through limited number of migration years. In this study, a multiple non linear regression model of maximum number probability function of migratory bird types has been obtained and can be used in the prediction of the maximum number of migratory bird types during any migration years. 相似文献
75.
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77.
We consider the problem of local linear estimation of the regression function when the regressor is functional. The main result of this paper is to prove the strong convergence (with rates), uniformly in bandwidth parameters (UIB), of the considered estimator. The main interest of this result is the possibility to derive the asymptotic properties of our estimate even if the bandwidth parameter is a random variable. 相似文献
78.
Fatemeh Zarei Ann Rosemary Taket Azam Rahmani Thomas G. Smith 《Journal of divorce & remarriage》2013,54(5):381-392
Sexuality and divorce are two interwoven subjects with complex effects on women's sexual well-being in Iranian culture. Results of this exploratory study using focus group discussions and individual interviews revealed how the sexual well-being of women was influenced by the divorce experience through common patterns and recurring themes. A total of 26 women participated voluntarily in the study. They were approached through a selected social support group in a center in West Tehran in 2011, and all had been divorced for less than 10 years. For the majority, sexuality-related matters became complicated and jeopardized their overall well-being in postdivorce life. This finding, along with the fact that the majority were seeking financial and emotional support, implies that counseling women and providing economic support for postdivorce life might improve women's sexual well-being. 相似文献
79.
Sideeq Mohammed 《Culture and Organization》2020,26(3):196-210
ABSTRACTThe ‘management guru’ text has long been a source of interest for academic audiences. In this tradition, this paper argues that the content and underpinning ideology of the guru guide hold important insights for organizational scholars interested in the works of Gilles Deleuze and Felix Guattari (and vice versa). Specifically, this paper will demonstrate that a close reading of entrepreneur and guru, Tim Ferriss’s, Tools of Titans, can provide meaningful exegesis and development of the concept of ‘microfascism’ presented by Deleuze and Guattari across their shared and independent corpuses. Building upon extant organization studies literature, this paper will endeavour to contribute to the commentary on the management guru by suggesting that the desire for fascism, power, conformity, and rule-following of which Deleuze and Guattari speak offers a productive way of understanding the success of the management guru and the broader allure of the management advice industry. 相似文献
80.
Mohammed Sulaiman 《Social Identities》2020,26(1):31-47
ABSTRACTIn this article, I undertake an investigation into the political significance of Islam and Muslimness. By doing so, I aim to underscore the primacy of Islam’s ontological (constitutive) nature and its irreducibility to any of its ontic (empirical) articulations. This project necessitates the recovery of the political as the moment of the formation of a collective order and community, irreducible to any of its material expressions (e.g. territorial or institutional unity). Thus, the article renounces the objectivity of the secular grammar which fixes, essentializes, and reduces Muslimness to being merely ‘religious’ as opposed to ‘political’. By contrast, it attempts to retrieve Islam’s basic condition of existence and hence emancipate it from the confines of the Western epistemic structure. Toward that end, the article presents a deconstructive analysis of Islam as an autonomous universe of meaning inaugurated by the event of the Divine Revelation to Prophet Muhammad as its originary moment. By doing so, I also emphasize the primacy of Muslimness as a political subjectivity, whose unity and autonomy is contingent upon the drawing of its most universal boundaries and the exclusion of an outside – a function, I argue, which had historically been fulfilled by the mechanism of the caliphate. Finally, the article discusses an alternative conceptualization of diaspora in order to come to grips with the political implications of Muslimness in the post-caliphate world order. 相似文献