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This article introduces a new asymmetric distribution constructed by assuming the multivariate normal mean-variance mixture model. Called normal mean-variance mixture of the Lindley distribution, we derive some mathematical properties of the new distribution. Also, a feasible maximum likelihood estimation procedure using the EM algorithm and the asymptotic standard errors of parameter estimates are developed. The performance of the proposed distribution is illustrated by means of real datasets and simulation analysis. 相似文献
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Mehrdad Massoudi 《Intercultural Education》2002,13(2):137-155
This essay looks at the requirements and qualities of a student and a teacher as seen from Eastern traditions such as Vedanta, Zen Buddhism and Sufism. The objective is to show or to propose that the same qualities are also needed in our present-day education system, no matter what the subject of study is. Though the emphasis is on these three particular systems, it is understood that one can find the same or similar qualities in other spiritual traditions. At the end of the essay, a heat transfer model is developed whereby the different aspects of an "ideal" teacher, sometimes also referred to as the real teacher, or the true teacher, can be obtained from such a model. 相似文献
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Farzane Hashemi Mehrdad Naderi Ahad Jamalizadeh Tsung-I Lin 《Journal of applied statistics》2020,47(16):3007
This paper presents a robust extension of factor analysis model by assuming the multivariate normal mean–variance mixture of Birnbaum–Saunders distribution for the unobservable factors and errors. A computationally analytical EM-based algorithm is developed to find maximum likelihood estimates of the parameters. The asymptotic standard errors of parameter estimates are derived under an information-based paradigm. Numerical merits of the proposed methodology are illustrated using both simulated and real datasets. 相似文献
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Effective evidence-based intervention for traumatic bereavement is one of the current major research issues in the field of Post Traumatic Stress Disorder (PTSD) in children and adolescents. The "Writing for Recovery" group intervention is a new treatment approach developed by the Children and War Foundation for traumatized and bereaved children and adolescents after disasters. The purpose of this project was an empirical examination of this intervention with 12- to 18-year-old war bereaved Afghani refugees. Eighty-eight war bereaved Afghani refugees were screened using the Traumatic Grief Inventory for Children (TGIC). From those with the highest total score, 61 were randomly assigned to either an experimental (n = 29) or control group (n = 32). The experimental group received six sessions of group training on 3 consecutive days in their school. The difference of TGIC scores between the experimental group in pretest and posttest was significant (p = 0.001). Results of analysis of covariance also showed a significant effect of Writing for Recovery on the experimental group (p < 0.001). It is concluded that "Writing for Recovery" is an effective group intervention for bereaved children and adolescents after disasters. 相似文献
5.
Mehrdad F. Falavarjani Christine J. Yeh 《Journal of ethnic and migration studies》2018,44(13):2219-2239
The authors investigate how patterns of heritage and mainstream cultural identification and acculturative stress may explain how Iranians living in Malaysia demonstrate enhanced creativity in creative achievements and creative problem-solving. The sample included 328 Iranian students who were recruited using a cluster sampling method. The results reveal that acculturative strategies (biculturalism, bicultural integration, or bicultural marginalisation) are associated with enhanced creativity. Specifically, strategies that involve disengaging from cultural practices, also referred to as marginalisation, are associated with creative achievements and finding creative solutions to problems. Moreover, heritage cultural identification mediated the relationship between culture shock and creative solution. That is, students who experienced culture shock in the mainstream culture relied on their cultural heritage knowledge and showed decline in their ability to solve a problem creatively. The findings illuminate how creative accomplishment and enhanced creativity potential may be linked to acculturation strategies. 相似文献
6.
Mehrdad Eftekhar Ehsan Mostafavi Mohammad Mehdi Gouya Noushin Fahimfar Abbas Sedaghat Mahnaz Shoghi 《Journal of gay & lesbian social services》2020,32(2):133-147
AbstractSexual contact is still one of the most important routes of HIV transmission. The aim of this study was identify the factors that underlie the higher prevalence of high-risk sexual behaviors in a sample of transgender women in Iran. The qualitative study used face-to-face, semi-structured, in-depth interviews in a sample of 15 transgender women. Our participants used sexual practices as a way to be approved/accepted as a woman. Using sex for this purpose led them to engage in high-risk sexual relationships. It is essential to consider these issues in consulting and education about high-risk behaviors. 相似文献
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Mehrdad Massoudi 《Intercultural Education》2006,17(4):421-437
Dialogue is an encounter between two or more human beings. We will consider how some scientists, philosophers and religious scholars have looked at dialogue and attempt to learn from each tradition while seeing this encounter under the umbrella of ‘Systems theory’, related to thermodynamics and flavored with Buddhist philosophy. The process of dialogue consists of three stages or phases: (1) pre‐dialogue; (2) dialogue; (3) post‐dialogue. Suggestions and techniques are offered for each phase and as to how to synthesize the three stages into a ‘whole’ dialogue. 相似文献
8.
Shahrzad Rahimi-Naghani Effat Merghati-Khoei Mohammad Shahbazi Farideh Khalajabadi Farahani Mehrdad Salehi 《Journal of sex research》2016,53(9):1153-1164
Sexual and reproductive health (SRH) knowledge is an important predictor of an individual’s sexual behavior; however, little is known regarding this issue among Iranians. This study assessed sexual and reproductive health knowledge among men and women aged 15 to 49 years in Tehran. A total of 755 men and women aged 15 to 49 years were recruited using multistage, random cluster sampling in June 2014. An illustrative anonymous questionnaire endorsed by the World Health Organization (WHO) was used to collect the data. Bivariate and multivariate analyses were performed. The results showed that men and women were moderately knowledgeable about sexual and reproductive health (mean score of SRH knowledge = 39, range: 26 to 52); however, myths and misperceptions prevailed in different aspects of SRH. For example, only 45% of women and 38.7% of men accurately knew that a person infected with human immunodeficiency virus (HIV) can look healthy. Friends were identified as the primary or secondary source of knowledge about puberty and sex-related issues. A multivariate analysis showed that being female (coefficient = 0.139, p < 0.001) and being married (coefficient = 0.180, p < 0.001) were significant predictors of better SRH knowledge, while being young (age group 15 to 24) was a significant determinant of poor SRH knowledge (coefficient = ?0.161, p < 0.001) when other influencing factors were controlled. Culturally appropriate and age-specific comprehensive education is recommended, particularly for men, the unmarried, and the younger generation in Iran. 相似文献
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Count data may be described by a Poisson regression model. If random coefficients are involved, maximum likelihood is not feasible and alternative estimation methods have to be employed. For the approach based on quasi-likelihood estimation a characterization of design optimality is derived and optimal designs are determined numerically for an example with random slope parameters. 相似文献