687 research outputs found
Diasporic sensibility-Representation of Indian diaspora in fictional works of Anita Rau Badami
No full textAbstract
The main purpose of the research is to investigate in detail about diasporic sensibility with specific reference to Indian diaspora in fictional works of Anita Rau Badami. Anita Rau Badami’s novel The Hero’s Walk Badamihas been specifically considered for this review. This novel is a perfect evidence for the diaspora written by Anita Rau Badami. In this novel she categorizes the cross cultural and traditional conflicts and expresses the consciousness of diaspora of the women characters very well. Further this novel deals with the issue of Emigration very well since it shows the insecurity of the migrants in both the sides. The author has shown the diaspora in this novel through the typical narration of the life of the characterSripathi. This paper systematically reviews the opinion of various authors? towards how Anita Rau Badami handles the issue in the Hero’s Walk
Key words: diasporic sensibility, fictional works, Diaspora and emigration, The Hero’s Walk, Anita Rau Badam
Rev. Benjamin Haupt, Director of the Library, speaking during the groundbreaking for the library renovation.
No full textRev. Benjamin Haupt, Director of the Library, speaking during the groundbreaking for the library renovation.https://scholar.csl.edu/libraryreno/1008/thumbnail.jp
Beteiligung als Strategie und Strukturelement einer Energiewende in Ostdeutschland
No full textZuerst erschienen im Lang-Verlag:
Keppler, Dorothee; Zöllner, Jan; Rau, Irina; Rupp, Johannes: Beteiligung als Strategie und Strukturelement einer Energiewende in Ostdeutschland. - In: Keppler, Dorothee; Nölting, Benjamin; Schröder, Carolin (Hg.): Neue Energie im Osten - Gestaltung des Umbruchs : Perspektiven für eine zukunftsfähige sozial-ökologische Energiewende. - Frankfurt am Main [u.a.] : Lang, 2011. - ISBN: 978-3-631-61009-1. - S. 187–206
Utilizing Ancillary Ligands to Optimize the Photophysical Properties of 4H-Imidazole Ruthenium Dyes
No full textRev. Benjamin Haupt, Director of the Library, shaking hands with Glenn and Kay Hasse during the groundbreaking for the library renovation.
No full textRev. Benjamin Haupt, Director of the Library, shaking hands with Glenn and Kay Hasse during the groundbreaking for the library renovation.https://scholar.csl.edu/libraryreno/1010/thumbnail.jp
Translating Part of France's Legal Heritage: Aubry and Rau on the Patrimoine
No full textReading the pages of the 19th century legal treatise written by Charles Aubry (1803-1882) and Frédéric-Charles Rau (1803-1877) on the patrimony has been, for generations, a rite of passage in French legal education. The theory of the patrimony has aptly been described as fundamental for French private law and the account given by Aubry and Rau, however distant it may be from the law in force, should be read by anyone who seeks to understand the French legal mind. Drawing on the English-language civilian vocabulary that is part of Quebec legal culture, the author offers a translation of this text by Aubry and Rau with some commentary on its canonical status in French legal letters. Even in its translated form, it offers a means for the English-speaking reader to encounter a tradition of abstract rationality in legal scholarship that is part of France's legal "heritage" (itself a French patrimoine but in another sense).La lecture des extraits portant sur le patrimoine du traité écrit au XIXe siècle par Charles Aubry (1803-1882) et Frédéric-Charles Rau (1803-1877) constitue, depuis des générations, un rite de passage dans la formation des juristes en France. La théorie du patrimoine a très justement été décrite comme fondamentale pour le droit privé français et le récit offert par Aubry et Rau doit être lu, malgré son écart avec le droit en vigueur, par toute personne qui cherche à comprendre l’imaginaire du juriste français. S’inspirant du lexique civiliste de langue anglaise qui fait partie de la culture juridique québécoise, l’auteur présente une traduction de ce texte d’Aubry et Rau assortie de quelques commentaires sur son statut canonique dans la juridique française. Même traduit, ce texte offre au lecteur de langue anglaise une façon de prendre contact avec une tradition de rationalité abstraite dans la doctrine juridique qui participe au « patrimoine » (au sens, ici de heritage en anglais) de droit français
Defect tolerant device geometries for lead-halide perovskite solar cells
No full textMotivation, Goal and Task of the Dissertation: Traditional photovoltaic device optimization efforts rely on reducing defect density by passivation of surfaces as well as improved material processing or usage of defect tolerant materials. However, recombination activity of a defect is not only a function of defect kinetics but also depends on the electrostatics and the design of the layer stack of a photovoltaic device. In this thesis we aim to propose, develop and prove an alternative approach to solar cell device optimization, by combining our knowledge of defects in a material with the impact of device geometry on recombination via those defects. However, to develop such guiding principles, we must first understand the recombination kinetics of defect mediated recombination. Hence, the first task we undertake is to develop an analytical model that estimates the electron and hole capture coefficients of defects. Defect capture coefficients are difficult to be determined experimentally and in the absence of better information, they are often heuristically assumed in device optimization studies. The information on defect capture coefficients is critical to explore strategies for modifying device geometry that will deliver a better performing PV device. So, in our second task, we use the model of defect capture coefficient in combination of the photovoltaic device simulator to study the impact of device geometry on the recombination activity through the defects inside the device. Device geometry affects the electrostatics of a device which controls the electron and hole concentration inside a device. From our efforts to device optimization in the first and second task it is apparent that besides the knowledge of defect kinetics, one also needs the knowledge of material properties of the different layers as well as their interfaces to pinpoint the root cause of underperformance to successfully improve a real device. The electron and hole concentration along with the defect capture coefficients determine the amount of defect mediated recombination inside a device. So, in our third task we take a step further and perform root cause analysis of underperformance as well as parameter estimation in perovskite solar cells to make informed decision in our device optimization efforts.Major Scientific Contributions: In the course of my doctoral studies, I have achieved all the three goals outlined above. In my first task I developed a microscopic model to estimate defect capture coefficients within the limits of harmonic oscillator approximation. The model developed in this thesis is a step beyond the state of the art in the sense that it predicts asymmetric capture coefficients, which is agreement to the reported values of capture coefficients in literature for well studies materials like GaAs. For my second task I performed extensive device simulation to study the impact of device geometry both by changing the properties of the charge transport layers as well as the absorber layer of in a perovskite solar cell. In this task, I also managed to achieve agreement with experimental findings in methylammonium lead halide perovskite solar cells with high open-circuit voltage. Through this task, I was able to propose, develop and prove the effectiveness of the new concept of "Defect tolerant solar cell geometries" and provide definite guiding principles for future device optimization efforts. In my third task, I was able to implement and apply Bayesian inference for root cause analysis and parameter estimation of perovskite solar cells. Usage of Bayesian inference techniques on perovskite solar cells have not been reported before in literature. This task introduces the perovskite solar cell community to Bayesian inference as well as machine learning methods for faster and non-invasive determination of material properties as well as root cause analysis for underperformance. The three tasks undertaken in the thesis involves three different kinds of theory and simulation approaches all equally complex. The first task involved pure analytical modeling, whereas the second task is based on device modeling by solution of coupled differential equation. The third task involved implementation of a system with Bayesian inference algorithms in combination of with deep neural networks. Major Publications: In this thesis I have made three first author publication covering the studies of the first and second task. A fourth first author journal article introducing the open source code developed as a part of the third task is submitted and a fifth first author journal article is being written discussing parameter estimation in perovskite solar cells using Bayesian inference.Published:1. Das, B., Aguilera, I., Rau, U. Kirchartz, T. What is a deep defect? Combining Shockley-Read-Hall statistics with multiphonon recombination theory. Phys. Rev. Mater. 4, 024602 (2020). https://doi.org/10.1103/PhysRevMaterials.4.0246022.Das, B., Liu, Z., Aguilera, I., Rau, U. Kirchartz, T. Defect tolerant device geometries for lead-halide perovskites. Mater. Adv. 2, 3655–3670 (2021). https://doi.org/10.1039/D0MA00902D3.Das, B., Aguilera, I., Rau, U. Kirchartz, T. Effect of Doping, Photodoping, and Bandgap Variation on the Performance of Perovskite Solar Cells. Adv. Opt. Mater. 2101947 (2022). https://doi.org/10.1002/adom.202101947Unpublished:4. Das, B., Rau, U., Kirchartz, T. Buonassisi, T. BayesMC: Python package for doing parameter estimation using Bayesian inference with Markov Chain Monte Carlo.5. Das, B., Rau, U., Buonassisi, T. Kirchartz, T. , Parameter estimation for perovskite solar cells using Bayesian inference
Un/Divided Loyalties in Anita Rau Badami’s Tamarind Mem
No full textThis paper aims to explore the tension between mobility, migration, and travelling, on the one hand, and settlement, stability, housing, and accommodation on the other, as a major theme in the South Asian Canadian diasporic author Anita Rau Badami’s debut novel Tamarind Mem (1996). As seen, it is my contention that questions of loyalty and belonging arise from this tension, which manifests itself in the variously troubled relationships the two female protagonists have to their numerous homes, real or imaginary, during their migration inside or outside of India because for them, the home as such is always imbued with memories of the familial and communal past, as well as a sense of isolation and dislocation. The examination of questions of loyalty and belonging in relation to the home in such a context necessitates the use of diaspora criticism as well as the application of cognitive literary studies in the analysis to follow
Ultrafast intramolecular relaxation and wave-packet motion in a ruthenium-based supramolecular photocatalyst
No full textThe hydrogen-evolving photocatalyst [(tbbpy)2 Ru(tpphz)Pd(Cl)2 ](2+) (tbbpy=4,4'-di-tert-butyl-2,2'-bipyridine, tpphz=tetrapyrido[3,2-a:2',3'-c:3'',2''-h:2''',3'''-j]phenazine) shows excitation-wavelength-dependent catalytic activity, which has been correlated to the localization of the initial excitation within the coordination sphere. In this contribution the excitation-wavelength dependence of the early excited-state relaxation and the occurrence of vibrational coherences are investigated by sub-20 fs transient absorption spectroscopy and DFT/TDDFT calculations. The comparison with the mononuclear precursor [(tbbpy)2 Ru(tpphz)](2+) highlights the influence of the catalytic center on these ultrafast processes. Only in the presence of the second metal center, does the excitation of a (1) MLCT state localized on the central part of the tpphz bridge lead to coherent wave-packet motion in the excited state
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