One of the most important and perilous groundwater contaminants is nitrate. The study area unconfined (free) aquifer Karaj, located in central Iran, which subject to quantity quality hazards due unbalanced urban, industrial, agricultural developments. Evaluation vulnerability condition this against nitrate as contamination index essential since consumed water provided by groundwater. This paper...

The adaptive Metropolis (AM) algorithm of Haario, Saksman and Tamminen [Bernoulli 7 (2001) 223-242] uses the estimated covariance of the target distribution in the proposal distribution. This paper introduces a new robust adaptive Metropolis algorithm estimating the shape of the target distribution and simultaneously coercing the acceptance rate. The adaptation rule is computationally simple ad...

Solving a new multi-objective hybrid flexible flowshop problem with limited waiting times and machinesequence-dependent set-up time constraints S.F. Attar a , M. Mohammadi a , R. Tavakkoli-Moghaddam b & S. Yaghoubi c a Department of Industrial Engineering, Faculty of Engineering , Kharazmi University , Karaj , Iran b Department of Industrial Engineering, College of Engineering and Center of Exc...

1Child Growth and Development Research Center, Pediatric Pulmonology Department, Research Institute of Primordial Prevention of NonCommunicable Disease, Isfahan University of Medical Sciences, Isfahan, IR Iran 2Imam Hassan Mojtaba Hospital, Alborz University of Medical Sciences, Karaj, IR Iran 3Research Center for Immunodeficiencies, Pediatrics Center of Excellence, Children’s Medical Center, T...

the space structure that governs cities has depended on several corresponding relations and various factors which consist of: population, job and activities, transportation patterns, urban sub-structures, various services and etc that always were connected to each other and have formed its space structure. but since these relations are more complicated in big cities, the importance of paying at...

Estimation of small failure probabilities is one of the most important and challenging problems in reliability engineering. In cases of practical interest, the failure probability is given by a high-dimensional integral. Since multivariate integration suffers from the curse of dimensionality, the usual numerical methods are inapplicable. Over the past decade, the civil engineering research comm...

Autoregressive fractional integrated moving average modeling strategy was used to model the daily average temperature (DAT) series of Sokoto metropolis for the period of 01/01/2003 to 03/04/2007. The time plot suggests that there is persistence dependence in the series. The order of fractional integration was found to be 0.6238841. The correct model for the daily average temperature data (DAT) ...

large cities and metropolitan areas in developing countries are growing rapidly. these areas grew by attracting all facilities, services and capital of the country. tehran has been the major city and center for decision and policy making in various administrative, political, economic and socialaspects. this political focus has brought economic, social, educational focus that attracted a vast ma...