Shear-lag analysis of a hybrid, unidirectional composite with fiber damage

Development of a method of analysis capable of predicting accurately the fracture behavior of unidirectional hybrid (buffer strip) composite laminates was studied. Three particular solutions are discussed in detail: broken fibers in a unidirectional half-plane; adjoined half planes of different fiber and matrix properties; and the solution of two half planes bounding a third distinct region of finite width. This finite width region represents a buffer strip and primary attention is given to the potential of this strip to arrest a crack that originates in one of the half planes. A materials modeling approach using the classical shear lag assumption to describe the stress transfer between fibers was analyzed. Explicit fiber and matrix properties of the three regions are retained, and changes in the laminate behavior as a function of the relative material properties, buffer strip width, and initial crack length are discussed

Analysis of a hybrid-undirectional buffer strip laminate

A method of analysis capable of predicting accurately the fracture behavior of a unidirectional composite laminate containing symmetrically placed buffer strips is presented. As an example, for a damaged graphite/epoxy laminate, the results demonstrate the manner in which to select the most efficient combination of buffer strip properties necessary to inhibit crack growth. Ultimate failure of the laminate after the arrest can occur under increasing load either by continued crack extension through the buffer strips or the crack can jump the buffer strips. For some typical hybrid materials it is found that a buffer strip spacing to width ratio of about four to one is the most efficient

Equanimity of Risk and Return Relationship between Shariah Index and General Index in India

The present study empirically examines the risk and return of the Nifty Shariah index and Nifty index during the period 2nd January 2007 to 31st December 2010. The sample period is further divided into bull market period and bear market period based on the movement of the both indices during the study period. The objective of the study is to analyse the performance of the Islamic index and common index and to test whether any significant difference between both indices in India. Based on the previous studies, the present paper employs Risk adjusted measurement such as Sharpe index, Treynor Index and Jensen alpha. The t- test is used to test the mean returns difference between both indices. The study found that Nifty Shariah has been underperformed during the sample and sub sample period. According to ttest, the mean difference between both indices has not been significant which reveals both are consistent. The risk adjusted returns for the both indices reveals that both were underperforming with respect to risk free rate of return. The study has also disclosed the low volatile nature of Nifty Shariah than Nifty index. Finally, the study concludes that Nifty Shariah and Nifty indices in India are performing in a similar manner

How is Shame Related to Obsessive-Compulsive Disorder?

This item is only available electronically.Shame is an overwhelming emotion in which one views themselves negatively (internal shame) or believes that others see them in a negative light (external shame). Higher levels of shame have been associated with mental health concerns such as anxiety and depression. Research suggests that shame is linked to Obsessive-Compulsive Disorder (OCD); however, there is limited evidence exploring this relationship. This study explored the relationship between types of shame (internal shame and external shame) and OCD symptomology and severity. Adult participants recruited from Facebook and a University population took part in an online survey measuring OCD symptom severity, OCD dimensions, internal shame, external shame, depression and anxiety. Measures of internal shame and external shame were positively correlated with OCD symptoms, OCD profiles, depression and anxiety. Hierarchical regression analyses showed that both internal and external shame are related to OCD symptom severity when controlling for depression and anxiety. Internal and external shame were positively correlated with all four OCD symptom dimensions, and the harm dimension was more strongly correlated with shame than other profiles. The findings suggest that shame may be an important factor to address when providing intervention for people with OCD.Thesis (M.Psych(Clinical)) -- University of Adelaide, School of Psychology, 202

Seasonal Anomalies between S&P CNX Nifty Shariah Index and S&P CNX Nifty Index in India

The present study compares the risk and return of the Nifty Shariah index and Nifty index at days, months and quarters wise during the period 2nd January 2007 to 31st December 2010. The raw returns of the both indices are calculated as today price minus yesterday price divided by yesterday price. The t- test has been used to test the mean returns difference between both indices. The average Monday return of the Nifty Shariah index is compared with average return of the Nifty index by using two sample t-test. Like that, the average returns of the remaining of the days of Nifty Shariah index are compared with average returns of remaining days of the Nifty Index. The study finds that there is no difference between average day -wise returns of the Nifty Shariah index and average day return of the Nifty Index during the study period. The study also compares the average January return of the Nifty Shariah index with average January return of the Nifty index, average February return of the Nifty Shariah index with average return of the Nifty index and so on. Finally, the average return of the first, second, third and fourth quarter of Nifty Shariah with average return of the respective first, second, third and fourth quarter of Nifty index are compared. The study finds that there is a significant difference between average return of the Nifty Shariah and Nifty indices in the month of July and September. It is derived from the study that the Muslim Investors are evincing more interest to sell the shares in the market from July to September. The reason being, expenses inconnection with Ramalan Festival during that period. Therefore, the study confirms that Ramalan effect have been prevailing in the Indian Stock Market. Thus, this study reveals that the seasonal variation exits very much in Shariah Inde

Design of Low Power and Area Efficient 8 Bit USR Using mGDI Technology

Technology is growing at a faster rate after the evolution of VLSI, which mainly focuses on three major criteria-speed, area and power. All these criteria determine the compactness of a product in order to produce an efficient output at a higher rate by consuming less power. To achieve the above-mentioned factors, an efficient 8-bit Universal Shift Register (USR) has been designed using modified Gate Diffusion Input (mGDI) technique. The results have been simulated using the TANNER EDA tool and found to contribute for low power and area