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Rajesh Rai

Bio: Rajesh Rai is an academic researcher from National University of Singapore. The author has contributed to research in topics: Diaspora & Geotechnical engineering. The author has an hindex of 8, co-authored 13 publications receiving 182 citations.

Papers
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Journal ArticleDOI
TL;DR: In this paper, three types of graphene oxide framework (GOF) membranes have been molecularly constructed via the aldehyde-functionalization of GO and a pressure assisted ultrafiltration method.

65 citations

MonographDOI
25 Jul 2008
TL;DR: Rajesh Rai and Peter Reeves as mentioned in this paper studied the social world of Gujarati merchants and their Indian Ocean networks in the seventeenth century and found that ethnicity, locality and circulation in two diasporic merchant networks from South Asia Claude Markovits and Murari Kumar Jha.
Abstract: Introduction Rajesh Rai and Peter Reeves Part 1: Transnational Networks 1 Ethnicity, locality and circulation in two diasporic merchant networks from South Asia Claude Markovits 2 The social world of Gujarati merchants and their Indian Ocean networks in the seventeenth century Murari Kumar Jha 3 Subaltern networks in a colonial diaspora: a study of Indian migrants and Mauritius Marina Carter 4 An entrepreneurial diaspora? Transnational space and India's international economic expansion Peter Reeves Part 2: Socio-economic Identities & Change 5 Indians in Southeast Asia: migrant labour, knowledge workers and the new India Amarjit Kaur 6 Indo-Fijians: roots and routes Brij V Lal 7 From Bharat to Sri Ram Desh: the emigration of Indian indentured labourers to Suriname Chan ES Choenni 8 Sociological reflections on the diasporic Bangladeshis in Singapore and USA Habibul Haque Khondker Part 3: Culture & Changing Diasporic Identities 9 The attrition and survival of minor South Asian languages in Singapore Rajesh Rai 10 Forging kinship with food: the experience of South Indians in Malaysia Theresa W Devasahayam 11 Bhai Maharaj Singh and the making of a 'model minority': Sikhs in Singapore Tan Li Jen 12 'The familiar temporariness': Naipaul, diaspora and the literary imagination: a personal narrative Vijay Mishra

33 citations

Journal ArticleDOI
TL;DR: In this paper , an attempt has been made to implement various machine learning techniques to predict the factor of safety of a natural residual soil slope and a man-made overburden mine dump slope using several physical and geometrical parameters of the respective slopes.
Abstract: In this paper, an attempt has been made to implement various machine learning techniques to predict the factor of safety of a natural residual soil slope and a man-made overburden mine dump slope using several physical and geometrical parameters of the respective slopes. As the stability predictions of a slope, whether natural or man-made, is very complex and time-consuming, several machine learning-based algorithms like Support Vector Regressor, Artificial Neural Network, Random Forest, Gradient Boosting and Extreme Gradient Boost were selected for modelling. The results derived from the models were compared with those achieved from numerical analysis. Moreover, various performance indices such as coefficient of determination, variance account for, root mean square error, learning rate and residual error were employed to evaluate the predictive performance of the developed models. The results indicate an excellent prediction performance and ease of interpretation of tree-based algorithms like Random Forest, Gradient Boosting and Extreme Gradient Boost than linear models like Support Vector Regressor and Neural Network-based algorithm for both the slope types. The Support Vector Regressor has the least while Extreme Gradient Boost has the highest predictive performance. Also, it was observed that the efficiency of various machine learning models to predict the factor of safety was found to be superior in the case of man-made dump slope than natural residual soil slope.

16 citations

Journal ArticleDOI
TL;DR: The authors examines how local and transnational developments converged in 1857 to transform European attitudes towards Indian inhabitants in Singapore and concludes that the change in disposition was largely the product of factors extraneous to the actions of the local Indian inhabitants themselves.
Abstract: This paper examines how local and transnational developments converged in 1857 to transform European attitudes towards Indian inhabitants in Singapore. Recognized in preceding years as useful to the security and the development of the colony, by late 1857, Indians in Singapore had come to be viewed by Europeans as a ‘menace’. That change in disposition was largely the product of factors extraneous to the actions of the local Indian inhabitants themselves. Besieged by news of multiple challenges to the British Empire, European nerves were rattled by perceived threats emanating from sections of the Asian populace in Singapore. In early 1857, a dispute between Tamil-Muslims and Europeans brought to the fore the latter's anxieties and prejudices. That episode was followed, in May, by news of the massive rebellion of native troops in India. The emerging distrust for Indians was exacerbated by public rumours and fanned by editorials and reports published in the local press. Perceptions of immediate danger from the colony of transported convicts, and the fear of an Indian conspiracy during Muharram, sparked a panic that would have ramifications on the position of Indians in Singapore and leave an imprint on the long term political development of the Straits Settlements.1

13 citations


Cited by
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Journal ArticleDOI
TL;DR: The purpose is to show how transnational and transimperial approaches are vital to understanding some of the key issues with which historians of health, disease, and medicine are concerned and to show what can be gained from taking a broader perspective.
Abstract: The emergence of global history has been one of the more notable features of academic history over the past three decades. Although historians of disease were among the pioneers of one of its earlier incarnations—world history—the recent “global turn” has made relatively little impact on histories of health, disease, and medicine. Most continue to be framed by familiar entities such as the colony or nation-state or are confined to particular medical “traditions.” This article aims to show what can be gained from taking a broader perspective. Its purpose is not to replace other ways of seeing or to write a new “grand narrative” but to show how transnational and transimperial approaches are vital to understanding some of the key issues with which historians of health, disease, and medicine are concerned. Moving on from an analysis of earlier periods of integration, the article offers some reflections on our own era of globalization and on the emerging field of global health.

1,334 citations

Journal ArticleDOI
TL;DR: In this paper, the authors highlight various properties of graphene and its derivatives that are essential for improving salt rejection, flux, and antifouling, and highlight a great deal of experimental research is essential to develop efficient graphene membrane-based desalination methods for practical use.

228 citations

Journal ArticleDOI
01 Nov 2018-Carbon
TL;DR: In this article, the authors discuss the methods to fabricate or modify multilayered Graphene Oxide (GO) membranes and compare them with conventional separation membranes and point out possible future research directions.

198 citations

Journal ArticleDOI
Xiaohu Luo1, Jiawen Zhong1, Qiulan Zhou1, Shuo Du1, Song Yuan1, Yali Liu1 
TL;DR: A novel cationic reduced graphene oxide-based epoxy coating was fabricated for corrosion protection and exhibits a high antibacterial activity toward Escherichia coli with 83.4 ± 1.3% antibacterial efficiency.
Abstract: The design and preparation of an excellent corrosion protection coating is still a grand challenge and is essential for large-scale practical application. Herein, a novel cationic reduced graphene oxide (denoted as RGO-ID+)-based epoxy coating was fabricated for corrosion protection. RGO-ID+ was synthesized by in situ synthesis and salification reaction, which is stable dispersion in water and epoxy latex, and the self-aligned RGO-ID+-reinforced cathodic electrophoretic epoxy nanocomposite coating (denoted as RGO-ID+ coating) at the surface of metal was prepared by electrodeposition. The self-alignment of RGO-ID+ in the coatings is mainly attributed to the electric field force. The significantly enhanced anticorrosion performance of RGO-ID+ coating is proved by a series of electrochemical measurements in different concentrated NaCl solutions and salt spray tests. This superior anticorrosion property benefits from the self-aligned RGO-ID+ nanosheets and the quaternary-N groups present in the RGO-ID+ nanoco...

125 citations

Journal ArticleDOI
TL;DR: Fetzer and Soper as mentioned in this paper explain the disparate political responses to the religious concerns of Muslims in Britain, France, and Germany, and the answer to the book's organizing question very much matters for Western Europe's political, religious, and social tranquility.
Abstract: Muslims and the State in Britain, France, and Germany. By Joel S. Fetzer and J. Christopher Soper. New York: Cambridge University Press, 2005. 224p. $60.00 cloth, $14.99 paper. The central question of Joel Fetzer and J. Christopher Soper's well-written and highly accessible book—how to explain the disparate political responses to the religious concerns of Muslims in Britain, France, and Germany—is clearly important. Indeed, while the question was pertinent before the tragedy of September 11 in 2001 and the American invasion and occupation of Iraq in 2003, it has become exponentially more urgent since. Although the difficulties of incorporating Muslim populations into the countries receiving them were neither a cause of nor directly connected to the aforementioned events, the negative chain reaction they subsequently precipitated within and outside of the diverse Muslim community within Western Europe nevertheless exposed serious tensions between many of the community's religious practices and the dominant cultural, social, and political mores of the host societies. In short, the answer to the book's organizing question very much matters for Western Europe's political, religious, and social tranquility.

119 citations