39 research outputs found

    Reply to "Comment on 'Inflation with a graceful exit and entrance driven by Hawking radiation' "

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    The Comment [J. T. Firouzjaee, preceding Comment, Phys. Rev. D 89, 068301 (2014)] raises two points in regard to our paper [S. K. Modak and D. Singleton, Phys. Rev. D 86, 123515 (2012)]. The first is that one cannot use the tunneling picture to obtain the temperature and particle production rate in the Friedman-Robertson-Walker space-time. The second comment raised by Firouzjaee is that the Hawking-like radiation model for inflation presented in [Modak and Singleton; S. K. Modak and D. Singleton, Int. J. Mod. Phys. D 21, 1242020 (2012)] is inconsistent with the observed scalar and tensor perturbation spectrum. We show that the first comment is beside the point-we do not use the tunneling method in our papers [Modak and Singleton; Modak and Singleton]. The second criticism by Firouzjaee comes from the author evaluating quantities at different times-he evaluates the parameters of our model at the beginning of inflation and then compares this with the scalar and tensor perturbations evaluated at the horizon exit point.From Physical Review D, Vol.89(6), 68302, available online: http://dx.doi.org/10.1103/PhysRevD.89.068302. Copyright ©2014 by American Physical Society.Publisher version: https://doi.org/10.1103/PhysRevD.89.06830

    Originality for Copyright Protection in Literary Works: After EBC v DB Modak

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    266-276Originality, can be termed as the grund norm (the basic norm) for copyrightability. However, no one-size-fits-all formula is adopted by countries on this aspect, and this article first explores the position and benchmarks to determine original literary work (because even for different ‘works’ the criteria differs). Pursuant to this inquiry of identifying the ambit of the respective thresholds, the Indian perspective is analysed with special emphasis on the decision delivered by Indian Supreme Court in DB Modak. The judgement is critiqued to identify lacunae and absurdity in determining the law laid down and its application in the factual matrix. Finally, subsequent Indian decisions are looked upon by the author to find out the underlying approach by the courts wrt interpretation of DB Modak and what common threads emerge from them

    Design & Implementation of Arduino based Self Defense System

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    Life’s protection wants of the moment nowadays. There are many cases of crimes. Safety of human being things let is whether or not at home, out of doors or it is their workplace. The literature surveyed suggests that a number of weapons are used for human beings' protection purposes. One current research indicates that there is a sneakers chip that is stuck to the footwear that receives activated when the person taps one leg behind the different 4 times. We focus on growing a prototype that is a clever glove that gets activated by using tapping on the switch. Once the system is activated it begins sending the GPS area to the ICE contacts and police manage rooms through GSM. It sends the modern-day vicinity of the victim. A piezoelectric buzzer siren will get activated after 1-2 minutes of the device gets switched on. A shock generator circuit is provided that generates an electric current. On the glove, there are two steel buttons that emit the electric shock when the two buttons come in contact with any surface or anybody. Until the gadget gets off it will keep on sending the location on the interval of 20 seconds and will keep on beeping continuously

    Representation and Bracketing in Repeated Games

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    In this experimental paper, the author investigates the framing effect of different representations of multiple strategic settings or games on a player’s strategic behavior. Two representations of the same environment are employed, wherein a player engages in two infinitely repeated prisoner’s dilemma games. In the first representation (termed Split), the stage games are shown separately. In contrast, the second representation (termed Linked) displays a combined stage game. The choice bracketing, distinguishing between Narrow and Broad bracketing, is considered a potential cause behind any disparity in behavior between the two representations. The Split representation does not necessitate broad bracketing, whereas the Linked representation compels it. Each type of bracketing has its own equilibrium implications. The author employs both a between-subject design (Study 1), where each subject observes only one representation, and a within-subject design (Study 2), where each subject is shown both the Linked and Split representations. In Study 1, significant differences in average behavior between the two representations are observed for both symmetric and asymmetric payoffs, albeit only after conditioning for session fixed effects. Study 2 reveals a more prominent effect of representation, and a sequence effect is observed, wherein the tendency to defect in both games is higher in the Linked representation if administered after the Split representation. In Study 2, for individuals who cannot be categorized as broad bracketers, the effect of seeing the Linked representation instead of the Split representation is economically significant. It increases the probability of choosing to cooperate in both games by more than 20% and decreases the probability to defect in both games by more than 25%

    Electroweak baryogenesis via bottom transport

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    © 2019 authors. Published by the American Physical Society. Published by the American Physical Society under the terms of the «https://creativecommons.org/licenses/by/4.0/» Creative Commons Attribution 4.0 International license. Further distribution of this work must maintain attribution to the author(s) and the published article's title, journal citation, and DOI. Funded by SCOAP3.We consider a scenario in which an extra bottom Yukawa coupling can drive electroweak baryogenesis in the general two-Higgs doublet model. It is found that the new bottom Yukawa coupling with O(0.1) in magnitude can generate the sufficient baryon asymmetry without conflicting existing data. We point out that future measurements of the bottom Yukawa coupling at High-Luminosity Large Hadron Collider and International Linear Collider, together with the CP asymmetry of B→Xsγ at SuperKEKB provide exquisite probes for this scenario11Nsciescopu

    Energetic, Electronic, and Optical Behavior of Intrinsic Charge Carrier-Trapping Defects in Ge-Doped ZnGa<sub>2</sub>O<sub>4</sub>: Insights from a DFT Study

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    Wide band gap semiconductors with high dielectric constant and good thermal dissipation are very popular for a wide range of optical and electronic devices. In recent studies, ZnGa2O4 has been projected as an alternative to Ga2O3. The structural simplicity (face-centered-cubic spinel structure) results in isotropic electronic and optical properties for ZnGa2O4 in comparison to the large anisotropic properties for the β-monoclinic variety of Ga2O3. Motivated by recent experimental observations on the enhancement of optical properties of ZnGa2O4 due to doping with Ge, the author has carried out a detailed systematic calculation using density functional theory to find out the origin. The present study investigates the structure, formation energies, and electronic properties of different intrinsic vacancy defects in Ge-doped ZnGa2O4 under various growth conditions. The doping of Ge is found to be energetically favored at both the tetrahedral sites and octahedral sites under oxygen-rich conditions. It has been revealed that the optical behavior of the undoped ZnGa2O4 is attributed to the electron trap centers induced by oxygen vacancy and hole trap centers induced by gallium vacancy, zinc vacancy, and antisite defect. Interestingly, the relative population of these intrinsic defects changed in the presence of Ge. It has been observed that antisite defects are no longer dominating defects in the presence of Ge. More interestingly, gallium vacancy, which is the dominating defect in the presence of Ge, can reduce the band gap significantly without introducing localized midgap states, which is very much important for achieving enhanced efficiency. Thus, the present study will be helpful for understanding the effects of native point defects and external Ge doping on ZnGa2O4 and provides important guidelines to design its band gap with the desired range by tuning the synthesis conditions

    Forty years of computers & chemical engineering: A bibliometric analysis

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    © 2020 Elsevier Ltd Computers & Chemical Engineering (CCE) is one of the premier international journals in the field of chemical engineering. CCE published its first issue in 1977 and completed forty years in 2016. More than four decades of continuous and successful journey influenced us to celebrate its contribution through a comprehensive bibliometric study. Using the Web of Science Core Collection database we depict trends of the journal in terms of papers, topics, authors, institutions, and countries. Networks visualization of co-citation of journals and authors, bibliographic coupling institutions and countries, and co-occurrence of author keywords are prepared using the visualization of similarities (VOS) viewer software. The present analysis explores publication and citation patterns of the journal. Professor Ignacio E. Grossmann, Carnegie Mellon University, and USA respectively appear as the most productive and influential author, institution, and country in CCE publications. Optimization based research topics received most attention in CCE publications
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