a method based on electrical capacitance tomography (ect) and an improved least squares support vector machine (ls-svm) is proposed for void fraction measurement of oil-gas two-phase flow. in the modeling stage, to solve the two problems in ls-svm, pruning skills are employed to make ls-svm sparse and robust; then the real-coded genetic algorithm is introduced to solve the difficult problem of ...

This paper examines the dimensions of social capital in Tehran. The data were collected by means of questionnaire. 2400 residents of Tehran were selected by stratified sampling who were over 15 years old. The theories of scholars such as Pierre Bourdieu, James Coleman, and Robert Putnam in definition of social capital are applied. Social capital has been studied in five aspects including associ...