Design of controllers for a Non-linear system using Pole-placement and Linear Quadratic Regulator Technique to solve Servo and Regulatory problem

This project mainly discusses about the design of controller for a nonlinear system like rotary inverted pendulum. This system is under actuated and well-suited for verification and practice of ideas emerging in control theory. Nonlinear systems exhibit instability, making the design of controllers for balancing in the stable position, a challenging problem. The dynamic model of the rotary inverted pendulum is identified first and the state space representation of the system is obtained. The controller is designed by using the pole placement technique and Linear Quadratic Regulator technique in MATLAB software package. The regulatory problem and the servo problem of rotary inverted pendulum system is solved with these controllers designed. The different controller design is implemented in simulation and their performances are compared. Simulation results onto a nonlinear system are given to illustrate the effectiveness of the developed strategies.nbs

(Un)becoming women: Indian factory women's counternarratives of gender

This paper portrays the life stories of five factory workers in Delhi whose life trajectories run counter to normative femininity. As daughters and wives, they are neglected, abandoned or rejected by their families; they live alone, with their parents past the age that is their natal right, with siblings, or with families and men who are not related to them. I explore the circulation of their counternarratives and how their gender transgressions go public through ordinary forms of talk, such as gossip and rumor. I argue that their move out of the normative is not produced by, but produces, their gender politics; that their agency emerges cognitively from the telling of their stories in tandem with their interlocutors' credulity and uptake; and that the site of gender politics for working class Indian women lies in the informal subaltern publics that are formed by the circulation of their stories. Contrary to the notion of a stable unitary subject that precedes the political, these women's counternarratives demonstrate the subject‐in‐process as a political effect. Their alterity does not exist outside the heteronormative gender order but demarcates the boundaries of its historicity, hinting at both the internal contradictions of existing gender relations and their future possibilities.Peer Reviewedhttp://deepblue.lib.umich.edu/bitstream/2027.42/112196/1/j.1467-954X.2011.02026.x.pd

Role of Endothelial Nitric Oxide Synthase Gene Polymorphisms in Predicting Aneurysmal Subarachnoid Hemorrhage in South Indian Patients

Endothelial nitric oxide synthase (eNOS) gene polymorphisms have been implicated as predisposing genetic factors that can predict aneurysmal subarachnoid hemorrhage (aSAH), but with controversial results from different populations. Using a case-control study design, we tested the hypothesis whether variants in eNOS gene can increase risk of aSAH among South Indian patients, either independently, or by interacting with other risk factors of the disease. We enrolled 122 patients, along with 224 ethnically matched controls. We screened the intron-4 27-bp VNTR, the promoter T-786C and the exon-7 G894T SNPs in the eNOS gene. We found marked interethnic differences in the genotype distribution of eNOS variants when comparing the South Indian population with the reported frequencies from Caucasian and Japanese populations. Genotype distributions in control and patient populations were found to be in Hardy-Weinberg equilibrium. In patients, the allele, genotype and estimated haplotype frequencies did not differ significantly from the controls. Multiple logistic regression indicated hypertension and smoking as risk factors for the disease, however the risk alleles did not have any interaction with these risk factors. Although the eNOS polymorphisms were not found to be a likely risk factor for aSAH, the role of factors such as ethnicity, gender, smoking and hypertension should be evaluated cautiously to understand the genotype to phenotype conversion