Examining the way of local identity perception in historic neighbors (Case of Study: Dodangeh Neighbor in Borujerd)

Place is a manifestation of subjective and social thinking, symbol of life and is a source of symbolic memories; it also is a part of our imaginations and attachments, though at present human and identical dimension of cities and places may be undermined. Place as a collection, helps to develop a process in which people’ sense of place and attachment and identity all are developed and maintained. These days, the loss of identity and lack of connectivity of human life spaces with historical and cultural contexts has been turned into one the main pre-occupations of current architectures and urban planners. Modern neighbors only cause to create non-places in lack of sufficient facilities for specification of human identities. This is while, a place is accounted as a litter for being situated and a part of human existence while is considered as a main identity source. So, it is essential to analyze the way of perception of local identity by people and the bilateral relationship of person and the place. In this paper, with the aim of assessing of the way of local identity perception in historic neighbors, we have tried to review theorists’ views on the basis of related documents. Examining different effective factors in that, model and the process of forming local identity were been specified. Finally, using SPSS 19, we examined mentioned model in Dodangeh neighbor in Borujerd. Results highlighted the importance of the staying time as well activity and memorability in creating local identity in historical neighbors.

Design and fabrication of the trapezoidal electrostatic comb-drive actuator

This paper reports the design, fabrication and characterization process of the trapezoidal Electrostatic Comb-drive Actuator (ECA) with the slope angle α=20. Together with the trapezoidal ones, the rectangular ECA with identical dimension was also designed and fabricated for comparison purpose. In order to reduce calculating deviation, the fringing effect was also taken into consider while carrying out theoretical analysis. The obtained results pointed out the fact, that the trapezoidal ECA excels the rectangular ones with the same numbers of teeth in electrostatic force and displacement generation, while requires relatively low driving voltage. But it is also observed that with higher driving voltage (larger than 50V), the trapezoidal ECA starts to lose its stability (the lateral pull-in phenomenon occurs).

A Biased Median Filtering Algorithm for Segmentation of Intestinal Cell Gland Images

In this paper, we introduce a biased median filtering image segmentation algorithm for intestinal cell glands consisting of goblet cells. While segmentation of individual cells are generally based on the dissimilarities in intensities, textures, and shapes between cell regions and background, the proposed segmentation algorithm of intestine cell glands is based on the differences in cell distributions. The intestine cell glands consist of goblet cells that are distributed in the chain-organized patterns in contrast to the more randomly distributed nongoblet cells scattered in the bright background. Four biased median filters with long rectangular windows of identical dimension, but different orientations, are designed based on the shapes and distributions of cells. Each biased median filter identifies a part of gland segments in a particular direction. The complete gland regions are the combined responses of the four biased median filters. A postprocessing procedure is designed to reduce the defects that may occur when glands are located very close together and to narrow the gapping areas because of the thin distribution of goblet cells. Segmentation results of real intestinal cell gland images are provided to show the effectiveness of the proposed algorithm.

Wind effect on staggered cylinders of square and rectangular sections with variable longitudinal spacings

An experimental investigation of mean pressure distributions on a group of cylinders with square and rectangular cross-sections in a uniform cross flow is presented here. The group consists of one rectangular and two square cylinders of identical dimension. The rectangular cylinder is placed centrally in the upstream side and the other two square cylinders are placed symmetrically in the downstream side with respect to tunnel axis. Surface pressure distributions on the cylinders are measured for various longitudinal spacings of the cylinders. Wind loads are obtained in terms of drag coefficients, lift coefficients and total force coefficients. The drag on an isolated cylinder is higher in general than that on the same cylinder while it becomes part of a group. Keywords: Wind load, staggered cylinders. DOI: 10.3329/jme.v38i0.901 Journal of Mechanical Engineering Vol.38 Dec. 2007 pp.52-57