A multi-stage cluster sampling is proposed for quantifying and monitoring plant species richness at multiple spatial grains over large spatial extents. An unbiased estimator of average species richness at different grains and a conservative estimator of its sampling variance are obtained in a complete design-based framework, i.e., avoiding any assumption about the ecological community under stu...

We consider the incorporation of a time-consistent coherent risk measure into a multi-stage stochastic programming model, so that the model can be solved using a SDDP-type algorithm. We describe the implementation of this algorithm, and study the solutions it gives for an application of hydro-thermal scheduling in the New Zealand electricity system. The performance of policies using this risk m...

the aim of this study is to investigate the role of security in social deviations among women of babol city. descriptive survey research method was used and the unit of analysis is 15-29 year old women that 284 women are selected on the basis of cochran formula and using multi-stage random cluster sampling. the results show that there is a weak significant relationship between the independent v...

Many works address the problem of object detection by means of machine learning with boosted classifiers. They exploit sliding window search, spanning the whole image: the patches, at all possible positions and sizes, are sent to the classifier. Several methods have been proposed to speed up the search (adding complementary features or using specialized hardware). In this paper we propose a sta...

Materials and methods A total of 482 heads of household have been selected by using a multi-stage sampling method. Data was collected via household’s structured questionnaire. The response rate was 71.7% and data was analysed by using SPSS version 16.0. Age range of respondents was 28 to 73 years old with the mean age of 46.60 ±11.85 years. The majority of clients were married (59.8%) and were ...

This cross-sectional study was performed in 2014 upon a sample consisting of 464 female students in Allame Tabatabaie University were selected based on a Morgan formula and multi-stage cluster random sampling. Then, participants responded to the questionnaires of body image disturbance of Reas and et al. (2002), perfectionism scale of Besharat (2004) and eating attitudes test of Garner and Garf...

Methodology A cross sectional study in Turkey, including both rural and urban population, carried out from October 2011 till January 2012. A total of 540 heads of household were selected using multi stage random sampling. Data was collected using structured self-administered questionnaire. The tools used was modified 16-item Quality of Care Through the Patients’ Eyes (QUOTE) questionnaire. QUOT...

Grasp planning for multi-fingered hands is computationally expensive due to the joint-contact coupling, surface nonlinearities and high dimensionality, thus is generally not affordable for real-time implementations. Traditional planning methods by optimization, sampling or learning work well in planning for parallel grippers but remain challenging for multifingered hands. This paper proposes a ...