397 research outputs found
Dayal Kaur Khalsa: The art of remembering
No full textIn the space of three years in the late eighties, Dayal Kaur Khalsa wrote and illustrated a series of picture books that constitute a visual (auto)biography. In these books, Khalsa explores the meaning and reliability of memory, and the importance of family context in life history. By evoking popular culture and its artifacts in her illustrations, Khalsaprovides afully realised, time-specific world for her character May to inhabit. Furthermore, through the device of self- referential visual quotations, by means of which characters and settings reappear from book to book, Khalsa creates a form of "visual intertextuality" unique in the canon of Canadian picture books.Peer reviewedfinal article publishe
Micro-crack detection in CFRP laminates using coda wave NDE
No full textCoda Waves or diffuse field has been touted to be an NDE method that does not require the damage to be in the path of the ultrasound. The object is insonified with ultrasound and instead of catching the first or second arrival, the waves are allowed to bounce multiple times. This aspect is very important in structural health monitoring (SHM) where the potential damage development location is unknown. Researchers have used Coda waves in the interrogation of seismic damage and metallic materials. In this work we have applied the technique to composite material, and present the results herein. The coda wave and acoustic emission signals are recorded simultaneously and corroborated. Development of small incipient damage in the form of micro-crack and their detection is the objective of this work.This proceeding may be downloaded for personal use only. Any other use requires prior permission of the author and AIP Publishing.
This proceeding appeared in Dayal, Vinay, Dan Barnard, and Richard Livings. "Micro-crack detection in CFRP laminates using coda wave NDE." In AIP Conference Proceedings, vol. 1949, no. 1, p. 210001. AIP Publishing LLC, 2018., and may be found at
DOI: 10.1063/1.5031644.
Copyright 2018 The Author(s).
Posted with permission
Grasslands of Arid Kachchh, India: Present Status and Management Strategies for Higher Productivity
No full textThe hot arid region covers an area of 31.70 million hectares in India, covering seven states that include Rajasthan, Gujarat, Punjab, Haryana, Andhra Pradesh, Karnataka and Maharashtra. The arid region in Gujarat is distributed in eight districts namely, Kachchh (100% of the district area), Jamnagar (80%), Surenderanagar (29%), Junagadh (20%), Banaskantha (18%), Mehsana (7%), Ahmadabad (6%) and Rajkot (6%). Gujarat accounts for 19.6% of the total arid zone in the country of which Kachchh district alone accounts for more than 70% arid area of the state (Shamsudheen et al., 2009). Under the conditions of low and erratic precipitation, high evapotranspiration and poor soil physical and fertility conditions, grasses and trees form the major vegetation that make natural rangelands and hence grasslands form one of the major ecosystem types in Kachchh. There are two major unique grassland ecosystems in Kachchh, namely Banni and Naliya. Banni, once referred as Asia`s finest grasslands cover an area of 2,617.72 km2 constituting 51.56% grassland area in Kachchh whereas Naliya grassland is covered in 654 km2 (12.89%) (GEER GUIDE, 2011). Banni alone constitute 45% of the permanent pasture and 10% of the grazing land available in Gujarat state (Patel, 2013). However these grasslands are under degraded condition due to biotic and abiotic factors including climatic factors, overgrazing, invasion of Prosopis juliflora, construction of dams and salinity ingress (Dayal et al., 2009b). To revive the grasslands introduction of native and potential alternate grasses are needed along with scientific management practices (Dayal et al., 2009a). The objective of this paper is to highlight the current status of research findings on measures to improve grassland productivity of rangelands in Kachahh region
Development of composite calibration standard for quantitative NDE by ultrasound and thermography
No full textInspection of aircraft components for damage utilizing ultrasonic Non-Destructive Evaluation (NDE) is a time intensive endeavor. Additional time spent during aircraft inspections translates to added cost to the company performing them, and as such, reducing this expenditure is of great importance. There is also great variance in the calibration samples from one entity to another due to a lack of a common calibration set. By characterizing damage types, we can condense the required calibration sets and reduce the time required to perform calibration while also providing procedures for the fabrication of these standard sets. We present here our effort to fabricate composite samples with known defects and quantify the size and location of defects, such as delaminations, and impact damage. Ultrasonic and Thermographic images are digitally enhanced to accurately measure the damage size. Ultrasonic NDE is compared with thermography.This proceeding may be downloaded for personal use only. Any other use requires prior permission of the author and AIP Publishing.
This proceeding appeared in Dayal, Vinay, Zach G. Benedict, Nishtha Bhatnagar, and Adam G. Harper. "Development of composite calibration standard for quantitative NDE by ultrasound and thermography." In AIP Conference Proceedings, vol. 1949, no. 1, p. 060006. AIP Publishing LLC, 2018, and may be found at
DOI: 10.1063/1.5031552.
Copyright 2018 The Author(s).
Posted with permission
Between Household and State
No full textBetween Household and State departs from dynastic narrations of the Mughal past to highlight the role of elite households and familial networks in peninsular India, the only region of the subcontinent never fully incorporated into the imperial realm. Drawing on rare documentary and literary materials in Persian and Urdu alongside the Dutch East India Company’s archives, this book takes readers on a journey from military forts and regional courts in the Deccan to the ports and weaving villages of the Coromandel Coast. It examines how regional elite alliances, feuds, and material exchanges intersected with imperial institutions to create new forms of affinity, belonging, and social exclusion. Subah Dayal brings attention to the importance of ghar—or home—in the creation of forms of mobility that anchored the Mughal frontier across the variable geography of peninsular India in the seventeenth century. “Subah Dayal’s impressive archival discoveries open up entirely new ways of thinking about mobility in South Asia in this exciting multilingual study.” — Purnima Dhavan, author of When Sparrows Became Hawks: The Making of the Sikh Warrior Tradition, 1699–1799 “A significant contribution. This engaging book should be required reading for anyone interested in the history of early modern South Asia and beyond.” — Ali Anooshahr, Professor of History at University of California, Davis “Through a careful reading of historical and literary texts and archival documents, Dayal provides many original insights into the world of the seventeenth century.” — Muzaffar Alam, George V. Bobrinskoy Professor of South Asian Languages and Civilizations at University of Chicag
Between Household and State
No full textBetween Household and State departs from dynastic narrations of the Mughal past to highlight the role of elite households and familial networks in peninsular India, the only region of the subcontinent never fully incorporated into the imperial realm. Drawing on rare documentary and literary materials in Persian and Urdu alongside the Dutch East India Company’s archives, this book takes readers on a journey from military forts and regional courts in the Deccan to the ports and weaving villages of the Coromandel Coast. It examines how regional elite alliances, feuds, and material exchanges intersected with imperial institutions to create new forms of affinity, belonging, and social exclusion. Subah Dayal brings attention to the importance of ghar—or home—in the creation of forms of mobility that anchored the Mughal frontier across the variable geography of peninsular India in the seventeenth century. “Subah Dayal’s impressive archival discoveries open up entirely new ways of thinking about mobility in South Asia in this exciting multilingual study.” — Purnima Dhavan, author of When Sparrows Became Hawks: The Making of the Sikh Warrior Tradition, 1699–1799 “A significant contribution. This engaging book should be required reading for anyone interested in the history of early modern South Asia and beyond.” — Ali Anooshahr, Professor of History at University of California, Davis “Through a careful reading of historical and literary texts and archival documents, Dayal provides many original insights into the world of the seventeenth century.” — Muzaffar Alam, George V. Bobrinskoy Professor of South Asian Languages and Civilizations at University of Chicag
Between Household and State
No full textBetween Household and State departs from dynastic narrations of the Mughal past to highlight the role of elite households and familial networks in peninsular India, the only region of the subcontinent never fully incorporated into the imperial realm. Drawing on rare documentary and literary materials in Persian and Urdu alongside the Dutch East India Company’s archives, this book takes readers on a journey from military forts and regional courts in the Deccan to the ports and weaving villages of the Coromandel Coast. It examines how regional elite alliances, feuds, and material exchanges intersected with imperial institutions to create new forms of affinity, belonging, and social exclusion. Subah Dayal brings attention to the importance of ghar—or home—in the creation of forms of mobility that anchored the Mughal frontier across the variable geography of peninsular India in the seventeenth century. “Subah Dayal’s impressive archival discoveries open up entirely new ways of thinking about mobility in South Asia in this exciting multilingual study.” — Purnima Dhavan, author of When Sparrows Became Hawks: The Making of the Sikh Warrior Tradition, 1699–1799 “A significant contribution. This engaging book should be required reading for anyone interested in the history of early modern South Asia and beyond.” — Ali Anooshahr, Professor of History at University of California, Davis “Through a careful reading of historical and literary texts and archival documents, Dayal provides many original insights into the world of the seventeenth century.” — Muzaffar Alam, George V. Bobrinskoy Professor of South Asian Languages and Civilizations at University of Chicag
- …
