排序方式: 共有49条查询结果,搜索用时 10 毫秒
1.
In this paper, a new generalization of alpha-skew-normal distribution is considered. Some properties of this distribution, which is denoted by GASN(α, λ), including moments, maximum likelihood estimation of parameters, and some other properties are studied. Finally, using a real data set, we show that our new distribution is the best-fitted distribution for the used data among normal, skew normal, alpha-skew-normal, and skew-bimodal-normal distributions. 相似文献
2.
Maryam Esna-Ashari 《Statistics》2016,50(6):1421-1433
In survival analysis and reliability theory, a fundamental problem is the study of lifetime properties of a live organism or system. In this regard, there have been considered and studied several models based on different concepts of ageing such as hazard rate and mean residual life. In this paper, we consider an additive-multiplicative hazard model (AMHM) and study some reliability and ageing properties of the proposed model. We then specify the bivariate models whose conditionals satisfy AMHM. Several properties of the proposed bivariate model are investigated and adequacy of the model is evaluated based on a real data set. 相似文献
3.
Statistical inference procedures based on transforms such as characteristic function and probability generating function have been examined by many researchers because they are much simpler than probability density functions. Here, a probability generating function based Jeffrey's divergence measure is proposed for parameter estimation and goodness-of-fit test. Being a member of the M-estimators, the proposed estimator is consistent. Also, the proposed goodness-of-fit test has good statistical power. The proposed divergence measure shows improved performance over existing probability generating function based measures. Real data examples are given to illustrate the proposed parameter estimation method and goodness-of-fit test. 相似文献
4.
Ghobad Barmalzan Amir T. Payandeh Najafabadi Narayanaswamy Balakrishnan 《统计学通讯:理论与方法》2019,48(3):660-675
In this paper, we discuss the usual stochastic and reversed hazard rate orders between the series and parallel systems from two sets of independent heterogeneous exponentiated Weibull components. We also obtain the results concerning the convex transform orders between parallel systems and obtain necessary and sufficient conditions under which the dispersive and usual stochastic orders, and the right spread and increasing convex orders between the lifetimes of the two systems are equivalent. Finally, in the multiple-outlier exponentiated Weibull models, based on weak majorization and p-larger orders between the vectors of scale and shape parameters, some characterization results for comparing the lifetimes of parallel and series systems are also established, respectively. The results of this paper can be used in practical situations to find various bounds for the important aging characteristics of these systems. 相似文献
5.
Maryam Dilmaghani 《Journal of Labor Research》2018,39(1):41-55
Using five cycles of a large nationally representative Canadian health survey, covering 2008 to 2012, the present paper examines the extent of labour earnings and household income gaps among gays, lesbians, and heterosexuals. The data used in this paper has the advantage of allowing for a direct classification of sexual orientation, through respondent self-identification. In accord with previous reports, this paper finds that homosexual females holding fulltime employment earn statistically significantly above comparable heterosexual females. Homosexual males with fulltime employment, on the other hand, are found no different in their earnings, from otherwise identical heterosexual males. When household income is considered, data reveal that lesbian households have statistically significantly lower incomes compared with otherwise identical gay households, who outearn heterosexuals as well. This pattern, not previously reported for Canada but observed in some other countries, is likely due to the combined effects of the general gender wage gap, the fading of homosexual males’ wage penalty, and the existence of two male income earners in a gay male household. 相似文献
6.
Maryam Dilmaghani 《Marriage & Family Review》2018,54(5):438-458
The higher religiosity of women is a longstanding feature of the religious landscape in the Western World. With the recent vibrancy of secular movements, the greater religiosity of women is reflected in a gender imbalance within the secular groups. For instance, more than three quarters of American atheists are male. Given the effects of both religiosity and secularity on worldview and lifestyle, this gender imbalance is likely consequential for marital behavior and outcomes. Using the latest cycle of the Canadian General Social Survey focused on family, this paper examines how marital behavior of individuals without any tie with religion or spirituality compares with others. Secular males are found appreciably more likely to experience marital dissolution, whereas their female counterparts are shown no different from others. This result lends support to the theories that posit religiosity as a complementary marital trait, requiring the mating of the like. The analysis also indicates that union formation behavior of secular females manifests a larger shift away from the traditional conceptions of marriage compared with secular males. Various explanations are explored. 相似文献
7.
Maryam Dilmaghani 《Journal of Labor Research》2017,38(1):82-99
Using recent data from the Canadian General Social Survey, I examine how religious belief and practice relate to labour earnings in Canada. Noting that religious landscape strongly varies across Canadian provinces, I explore whether these discrepancies are reflected in the association of wages and religiosity indicators, for men and women. Moreover, I identify two groups of individuals, one without any tie with religion and spirituality, and the other shaping their lives around them. I find that males belonging to the least religious group earn significantly below otherwise identical individuals in the high affiliation province of Newfoundland, while they enjoy a ceteris paribus wage premium in the low religiosity provinces of British Columbia and Québec. Females of the most religious group, on the other hand, are found at a disadvantage in the Canadian west, where affiliation with Conservative Protestantism is more prevalent. 相似文献
8.
Linda Sweet Maryam Bazargan Lois McKellar Joanne Gray Amanda Henderson 《Women and birth : journal of the Australian College of Midwives》2018,31(1):59-68
Background
There is no current validated clinical assessment tool to measure the attainment of midwifery student competence in the midwifery practice setting. The lack of a valid assessment tool has led to a proliferation of tools and inconsistency in assessment of, and feedback on student learning.Objective
This research aimed to develop and validate a tool to assess competence of midwifery students in practice-based settings.Design
A mixed-methods approach was used and the study implemented in two phases. Phase one involved the development of the AMSAT tool with qualitative feedback from midwifery academics, midwife assessors of students, and midwifery students. In phase two the newly developed AMSAT tool was piloted across a range of midwifery practice settings and ANOVA was used to compare scores across year levels, with feedback being obtained from assessors.Findings
Analysis of 150 AMSAT forms indicate the AMSAT as: reliable (Cronbach alpha greater than 0.9); valid—data extraction loaded predominantly onto one factor; and sensitivity scores indicating level of proficiency increased across the three years. Feedback evaluation forms (n = 83) suggest acceptance of this tool for the purpose of both assessing and providing feedback on midwifery student’s practice performance and competence.Conclusion
The AMSAT is a valid, reliable and acceptable midwifery assessment tool enables consistent assessment of midwifery student competence. This assists benchmarking across midwifery education programs. 相似文献9.
10.
Paull Megan Holmes Kirsten Omari Maryam Haski-Leventhal Debbie MacCallum Judith Young Susan Scott Rowena 《Voluntas: International Journal of Voluntary and Nonprofit Organizations》2022,33(4):833-845
VOLUNTAS: International Journal of Voluntary and Nonprofit Organizations - This paper examines myths and misconceptions about university student volunteering. Our study explored the experiences of... 相似文献