1,066 research outputs found
The Responsibility to Protect: Norms, Laws and the Use of Force in International Politics
No full textThis volume is a collection of the key writings of Professor Ramesh Thakur on norms and laws regulating the international use of force. The adoption of the Responsibility to Protect (R2P) principle by world leaders assembled at the UN summit in 2005 is widely acknowledged to represent one of the great normative advances in international politics since 1945. The author has been involved in this shift from the dominant norm of non-intervention to R2P as an actor, public intellectual and academic and has been a key thinker in this process. These essays represent the author's writings on R2P, including reference to test cases as they arose, such as with Cyclone Nargis in Myanmar in 2008. Comprising essays by a key thinker and agent in the Responsibility to Protect debates, this book will be of much interest to students of international politics, human rights, international law, war and conflict studies, international security and IR in general
The Life Model of Nisargadatta Maharaj as Interpreted by Ramesh Balsekar
No full textRamesh Balsekar (1917–2009) was a disciple of Nisargadatta Maharaj (1897–1981). Nisargadatta Maharaj lived in Bombay and taught what he realized: For doing our dharma everything is provided for us. Thus we can focus our attention on discovering “Who one is“ and let life flow. In 1996 the author of this article had a short conversation with Ramesh Balsekar, who presented his way of understanding the teaching of Nisargadatta Maharaj
Ab-initio predictions of phase stability, electronic structure, and optical properties of (0001)-MAX surfaces in M2AC (M = Cr, Zr, Hf; A = Al, Ga)
No full textHere, we report MAX phases' surface properties, which are essential for thin-film technology due to their excellent resistance to high-temperature oxidation, corrosion, and wear. The surface stability, electronic, and optical properties of 0001-surfaces in M2AC (M = Zr, Hf, Cr; A = Al, Ga) are investigated and compared with their bulk counterparts. The interplay between chemical bonding and charge distribution is discussed from electronic structure, including the Fermi surfaces. Four possible (0001)-terminated surfaces are considered by breaking M − C and M-A bonds in which cleavage energy of M − C is higher than M-A. The Cr–Al bond in Cr2AlC is stronger than other M-A bonds. The charge density of valance A-p electrons redistributes in the surface area, distinct from that of the bulk. The A- and M(C)-terminated (0001)-surfaces are the most stable and energetically favorable terminations due to lower surface energies. The optical properties of the most stable (0001)-surfaces were also investigated to understand the dielectric and photoconductive behavior in the (0001)-terminated surfaces of M2AC.This is a manuscript of an article published as Qureshi, Muhammad Waqas, Xinxin Ma, Xinghong Zhang, Guangze Tang, Ramesh Paudel, and Durga Paudyal. "Ab-initio predictions of phase stability, electronic structure, and optical properties of (0001)-MAX surfaces in M2AC (M= Cr, Zr, Hf; A= Al, Ga)." Journal of Physics and Chemistry of Solids 160 (2022): 110338.
DOI: 10.1016/j.jpcs.2021.110338.
Copyright 2021 Elsevier Ltd.
DOE Contract Number(s): AC02-07CH11358
A novel design for an RF MEMS resistive switch on PCB substrate
No full textCopyright @ 2008 Stimulation Action on MEM
On the derived functors of the third symmetric-power functor
No full textWe compute the derived functors of the third symmetric-power functor and their cross-effects for certain values. These calculations match predictions by the first named author and largely prove them in general
Electronic, magnetic, and optical properties of bulk and (1 1 1)-surfaces of CoMnZnSi quaternary Heusler alloy
No full textThe structural stability, electronic structure, and magnetic and optical properties of CoMnZnSi quaternary Heusler alloy (QHA) in the bulk and (1 1 1)-slab forms have been investigated by performing density functional theory (DFT) calculations. Formation and cohesive energies, and elastic constants confirm that the bulk CoMnZnSi is chemically and mechanically stable at an equilibrium lattice parameter of 5.81 Å. The calculated elastic constants also indicate that this QHA has ductile and anisotropic features. We investigate and discuss the bonding behavior from charge density distribution and density of states. These calculations in the bulk phase show a perfect half-metallic behavior with an integer value of magnetic moment (4 µB) and a large spin-flip gap of 0.39 eV. On the other hand, the Co (1 1 1) and Si (1 1 1)-slabs exhibit semi-metallic nature at the Fermi level. These results indicate that CoMnZnSi qualifies for spintronic applications. In the bulk and Co (1 1 1), Zn (1 1 1), and Si (1 1 1)-surfaces, the magnetic moment of Co and Mn atoms are ferromagnetically aligned, while the ferrimagnetic alignment of Co with Mn has been found in Mn (1 1 1)-surface. We also investigate the optimal conductivity, dielectric functions, reflectivity, absorption coefficient, refractive index, and loss function to understand the underlying optical properties of this alloy.This is a manuscript of an article published as Paudel, Ramesh, Jing-Chuan Zhu, Moaid K. Hussain, Mohammed Batouche, Muhammad Waqas Qureshi, and Durga Paudyal. "Electronic, magnetic, and optical properties of bulk and (1 1 1)-surfaces of CoMnZnSi quaternary Heusler alloy." Journal of Magnetism and Magnetic Materials 539 (2021): 168425.
DOI: 10.1016/j.jmmm.2021.168425.
Copyright 2021 Elsevier B.V.
DOE Contract Number(s): AC02-07CH11358
Electronic and magnetic properties of iridium-based novel Heusler alloys
No full textHalf-metallicity and magnetism including exchange splitting are the most significant physical parameters to predict and design a candidate material for spintronic applications. We report here an ab-initio investigation on chemical formation and dynamical stability along with electronic structure and magnetic properties of Ir2Cr (Si, Ge) and IrRhCr (Si, Ge) Heusler alloys. The negative formation and cohesive energies with positive phonon dispersions confirm the stabilities of these alloys. Electronic structure calculations reveal that Ir2Cr (Si, Ge) and IrRhCrSi alloys are half-metallic ferromagnets with unprecedented exchange splitting. In addition, IrRhCrGe also shows semi-metallic nature. All of these materials follow Slater Pauling rule with large magnetic moments and 100% spin-polarization. With Cr bearing the majority of the local magnetic moment and exchange splitting, a ferromagnetic state is more stable than a nonmagnetic state. The electronic charge distribution and population analysis confirm mixed ionic and covalent bonding. The magnetocrystalline anisotropy energy, with the easy magnetization along the [1 1 1] direction, is significantly high in Ir2CrGe. Elastic constants such as shear (G), bulk (B), Young’s moduli, and Poisson’s ratio indicate that the IrRhCrSi and IrRhCrGe alloys are mechanically stable, and Ir2CrSi and Ir2CrGe are mechanically unstable. The Pugh’s (B/G) and Poisson’s ratios confirm that the stable alloys are ductile.This is a manuscript of an article published as Paudel, Ramesh, K. C. Santosh, Sudeep Adhikari, JingChuan Zhu, Sohail Ahmad, Gopi Chandra Kaphle, and Durga Paudyal. "Electronic and magnetic properties of iridium-based novel Heusler alloys." Journal of Magnetism and Magnetic Materials 555 (2022): 169405.
DOI: 10.1016/j.jmmm.2022.169405.
Copyright 2022 Elsevier B.V.
Posted with permission.
DOE Contract Number(s): AC02-07CH11358; ACI-1548562; AC02-05CH11231; RGP2/139/43
Importance of marriage for Asian Indian women in the U.S.: an exploratory study
No full textThroughout the past century and across various cultures, the concept of marriage has significantly changed from being a union between two families to a union between two individuals. The change has penetrated South Asia, despite collectivism being the norm in Asian Indian culture. The current exploratory study was done to investigate an unexamined area of research namely, the pressure experienced by unmarried Asian Indian women in the United States. A qualitative research design combining ethnographic and grounded theory was used. Ten interviews were conducted with heterosexual, Asian Indian, Hindu women, above the age of 25, and raised in the United States. Four main research questions were addressed: (1) What pressures do family and community put on Asian Indian women to get married (2) What effect does remaining unmarried have on Asian Indian women (3) How do certain factors (i.e., past relationships, religion, skin color, and education) affect how desirable these women are to others, and how desirable they feel? and (4) What are Asian Indian women’s perspectives on marriage? The interview data collected were analyzed to uncover qualitative themes. These themes included the following: the women interviewed felt that all Asian Indian women were born to be brides, that Asian Indian women did not go through a process of separation-individuation as defined in Western psychology, that parents experienced a great deal of shame if their daughters remained unmarried, that a great amount of interpersonal conflict with family and friends resulted from staying single, and that most women had felt that they needed to get married before the age of thirty. Although several of the women interviewed stated that they were ambivalent about the idea of marrying someone of Indian origin, the women felt that several factors affected how desirable they were to other members of the Indian community. The findings of this study suggest important implications for clinical psychology training for mental health clinicians. The study suggests that therapists should have an increased understanding of the difference in separation-individuation between Western and Asian Indian culture, the importance of an Asian Indian woman’s external presentation, and the extreme shame that these women may experience by remaining single.Psy. D.Includes bibliographical referencesby Snigdha Ramesh Ratho
Automated detection of ultrastructural features at neuronal synapses
No full textSynaptic vesicles are the ultracellular structures responsible for carrying chemical messengers known as neurotransmitters from inside the axon of a neuron to the synaptic junction outside. The variation in size and location of these structures is important in the study of their use and reuse in neurons. We propose a method to locate and estimate the diameter of vesicles in electron microscope images of synapses. We train a U-Net inspired model to perform pixel-wise segmentation of the vesicles against background pixels. We then use contour detection on the resulting segmentation maps to determine individual vesicle centers and effective diameters. To our knowledge, there are no baselines in this task so we establish one on an in-house dataset. Our results show that the proposed model performed well on this task.Submission published under a 24 month embargo labeled 'U of I Access', the embargo will last until 2022-05-01The student, Ashwin Ramesh, accepted the attached license on 2020-05-12 at 19:48.The student, Ashwin Ramesh, submitted this Thesis for approval on 2020-05-12 at 20:03.This Thesis was approved for publication on 2020-05-13 at 10:06.DSpace SAF Submission Ingestion Package generated from Vireo submission #15370 on 2020-08-25 at 17:31:20Made available in DSpace on 2020-08-26T23:58:49Z (GMT). No. of bitstreams: 2
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Lift date: 2022-08-26T23:58:55Z
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A Field Ion Microscope Study of Interfaces
No full textTitle: A Field Ion Microscope Study of Interfaces, Author: Ramesh Rajagopal, Location: ThodeThis investigation is concerned with the observation of interfaces between f.c.c. and b.c.c. crystals in the field ion microscope. A high vacuum field ion microscope was designed and constructed to operate under liquid nitrogen cooling and helium gas imaging, with facilities for vapour deposition. Platinum and iridium were deposited on tungsten field ion emitters by shadow vapour deposition. The nature and contrast of deposits obtained under various experimental conditions are examined. The atomic matching observed at interfaces is discussed within the limitations of the existing interfacial contrast theory.ThesisMaster of Engineering (ME
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