Quotient probabilistic normed spaces and completeness results

We introduce the concept of quotient in PN spaces and give some examples. We prove some theorems with regard to the completeness of a quotient.Comment: 10 page

A Cross Sectional Study of Iranian Women and Sex Preference for Children

Background: Children sex preferences may have significant effects in fertility behavior which is an influential component of population dynamics and could control the population size, structure, and composition. One of the core concerns of researches and policy makers is to study these determinants.Objectives: The main objective of this study is to investigate Iranian women’s sex preference and its highly influential factors through applying Classification & Regression Trees algorithm as a practical classification method.Materials: A cross-sectional study during 2014 was conducted to collect demographical data of 1250 Iranian women in age 15-49. To classify sex preferences for children, age, educational level, place of residence, and difference number of siblings for women, were nominated as predictors.Results: 71 percentages of women’s sex preference have been classified correctly (the accuracy of the model=0.71). In extracted decision tree, women's age, educational level and difference number of siblings were significant. One of the vital results indicated that educated Iranian women in different age cohorts are in favor of having girls.Conclusions: Classification & Regression Trees is an effective and easy to interpret non-parametric method which builds classification tree for predicting dependent variables

Efisiensi Produktifitas Wakaf Tunai (Wakaf Uang) Dalam Pemberdayaan Ekonomi Di Indonesia

This article aims to analyze the waqf if it is managed productively. Commonly, the existence of waqf in Indonesia is used for the mosque, school, farm, and orphanages. Thus, the existence of cash waqf is productive if it can be a solution for the community to improve the economy of the people as a form of solidarity that becomes an instrument contributed to the welfare of societ

On the Intuitionistic fuzzy topological (metric and normed) spaces

In this paper, we define precompact set in intuitionistic fuzzy metric spaces and prove that any subset of an intuitionistic fuzzy metric space is compact if and only if it is precompact and complete. Also we define topologically complete intuitionistic fuzzy metrizable spaces and prove that any $G_{\delta }$ set in a complete intuitionistic fuzzy metric spaces is a topologically complete intuitionistic fuzzy metrizable space and vice versa. Finally, we define intuitionistic fuzzy normed spaces and fuzzy boundedness for linear operators and so we prove that every finite dimensional intuitionistic fuzzy normed space is complete.Comment: 16 page

Determinants of Iranian youths’ marriage age: A parametric survival analysis approach

  Background: Early and delayed marriage has their own effects on mothers and their children's health and social dimensions. Nowadays, Iran experiences delayed marriage due to several factors; thus, the present study was concocted to investigate the factors affecting youths’ marriage age, and to compare these factors between males and females.  Methods: To study demographic, socio-economical, and some atitudinal behavior factors affecting the age of marriage, in the current cross-sectional study, 12741 Iranian pre-married youths including 6381 males and 6360 females from all provinces were selected using multi-stage stratified method and the data was collected using a structured questionnaire in 2014. The questionnaire included demographic, socio-economical, and some atitudinal behavior questions about childbearing. Kaplan-Meier, Log-Rank test, and parametric survival analysis were applied in IBM SPSS Statistics for Windows, Version 22.0., and SAS 9.3 software.     Results: Gamma and Log Logistic parametric models were the best fitted models for females’ and males’ marriage age, respectively. Females and males who lived in provinces with TFR<2 were married α=0.03 (95%CI=0.02_-0.05) and α=0.05 (95%CI=0.04_0.06) times later than those who lived in provinces with TFR 2, respectively. Rural females and males married α=-0.06 (95%CI=-0.08_-0.03) and -0.02 (95%CI=-0.06_-0.03) times sooner than urban ones, respectively. As educational level, the number of siblings, and income increased, the youths’ marriage age increased (P<0.05). Employed youths also married later compared with unemployed ones.  Conclusion: Young females and males had the same factors influencing their marriage age

Geodetic precession and shadow of quantum extended black holes

We study the circular motion of massive and massless particles in a recently proposed quantum-corrected Schwarzschild black hole in loop quantum gravity. This solution is supposed to introduce small but non-zero quantum corrections in the low curvature limit. In this paper, we confine our attention to the shadow of the black hole and the geodetic precession of a freely falling gyroscope in a circular orbit. Despite the mathematical complexity of the metric, our results are exact and show that the black hole shadow decreases slightly in this solution while the quantum corrections introduce a non-trivial term in the geodetic precession frequency of the gyroscope.Comment: 9 page