Generation of Multiple Earthquake Accelerograms Compatible with Spectrum Via the Wavelet Packet Transform and Stochastic Neural Networks

The principal purpose of this article is to present a novel methodology based on wavelet packet transform techniques and stochastic neural networks to generate more artificial earthquake accelerograms from available data, which are compatible with specified response spectra or the design spectra. The proposed method uses the decomposing capabilities of wavelet packet transform on earthquake accelerograms, and the learning abilities of stochastic neural network to expand the knowledge of the inverse mapping from response spectrum to coefficients of wavelet packet transform of earthquake accelerogram. This methodology results in a stochastic ensemble of wavelet packet transform coefficients of earthquake accelerograms and, they are used to the generate accelerograms applying the inverse wavelet packet transform. Finally, an interpretive example is presented which uses an ensemble of recorded accelerograms to train and test the neural network, aiming at the demonstration of the method effectiveness.     

Tehran’s subway: gender,mobility, and the adaptation of the ‘proper’ Muslim woman

Tehran’s subway, the most affordable means of public transportation in the city, offers a useful context to study the relationship between women’s spatial mobility, the construction of self, and social production of space. This study focuses on Line 1 of Tehran’s subway that connects Tehran’s Bala Shahr (Northern Tehran) and Paeen Shahr (Southern Tehran) neighborhoods. This study draws upon 46 semi-structured interviews with women who were using subway Line 1 in the fall and winter of 2012. The average hour-long interviews examine how women’s emotional states as well as their perceptions of self and space vary as they traverse the city on Line 1. Representing a cultural as well as a spatial transect through the city, the perceptions of women on subway’s Line 1 convey the repudiation of the state’s attempt to promote a singular Muslim female identity. The findings suggest that similar to women’s perception of space, their gendered identities are constantly changing through the enhanced mobility that is facilitated by Tehran’s subway system. In contrast to what is presumed in the West, with a simple change in their hijab style or make-up, Iranian women innovatively negotiate contrasting spaces.     

Mapping women in Tehran's public spaces: a geo-visualization perspective

Functioning public spaces, as ‘public’ political, social, and cultural arenas of citizen discourse, affect not only the citizen's quality of life, but are also indispensable infrastructure in democratic societies. This article offers a nuanced understanding of Iranian women's usage, feelings, and preferences in public spaces in present-day Tehran by not simply importing Western theories that sustain distinctions between traditional and modern women, but instead by hearing women's stories. This article raises concerns related to the gender identities, the politics of space, and design of these places. Meidan-e-Tajrish, Sabz-e-Meidan, and Marvi Meidancheh in Tehran accommodate an ethnographic visualization of gendering space. The process by which Iranian women attach symbolic meanings to those public spaces offers insight into the mutual construction of gender identities and space politics. The contrasting urban locations, different design styles, and distinct social activities provide an excellent comparison between the selected public spaces. Findings suggest caution in using gender as an essential category in feminist geography research to better represent the diversity of experiences in public spaces. Binary categorization of modern versus traditional, secular versus religious, public versus private, and male versus female in urban studies should be carefully validated as Iranian women's lived experiences challenge the homogenizing Western theories, particularly the predominant critics of modern public spaces in North America. The research process also highlights the benefits of geo-visualization in understanding the complex interaction between gender identities and the built environment.     

Avoiding the “F” word: feminist geography in Iran

Abstract

Little attention has been given to how feminist geography is defined, applied, and taught in non-Anglophone countries, especially in Muslim majority societies where Women’s Rights are quite different from the western world. The case of Iran among other Middle Eastern countries becomes even more isolated due to the several political, linguistic, and cultural limitations opposed on Iranian academics and international collaborations after the 1979 Islamic Revolution. Women make half of Iran’s 80 million population, 63% of university graduates, almost half of informal workers, 30% of Iranian professors, 13% of high level management position holders, and under 5% of the Islamic Majlis (Iran’s Parliament). However, feminist geography, the sub-discipline that has been traditionally dedicated to the inclusion of gender as an analytical lens within Geography, is not a recognized field at any departments in Iran. This essay aims to present the current status of feminist geographic research and teaching at selected Iranian Universities. My goal is to offer a better understanding of how the local social and political context affect what constitute feminist geographic work and how geographers navigate the political and hierarchal university systems to engage in gender studies. Through informal interviews via emails and Skype with several Iranian geographers, I illustrate why Iranian geographers often avoid using “feminist” terminology in recognizing their work, even though their work is feminist.