Spontaneous Supersymmetric Generation of an Indeterminate Mass Scale and a Possible Light Sterile Neutrino

If a global continuous symmetry of a supersymmetric field theory is spontaneously broken while preserving the supersymmetry, the resulting theory has a massless superfield. One of its two bosonic degrees of freedom is the familiar phase rotation of the usual massless Nambu-Goldstone boson, but the other is a scale transformation. An indeterminate mass scale is thus generated. In the fermion sector, a seesaw texture appears which may be suitable for a possible light sterile neutrino. This feature persists even after the gauging of the continuous symmetry or the breaking of the supersymmetry to resolve the aforementioned mass-scale ambiguity.Comment: 9 pages, expanded to include the discussion of a possible sterile neutrin

Unsteady Temperature Distribution for Laminar Flow in a Porous Straight Channel

Temperature distribution in a viscous incompressible fluid flowing between two parallel porous flat plates has been investigated when the lower plate is injecting the fluid while the upper one is sucking it with the same rate. Viscous dissipation has been neglected and the rate of heat generation per unit volume per unit time has been taken to be a function of time. Laplace transform technique has been used to obtain an expression for the temperature distribution. Taking the rate of heat generation as an oscillating function of time, numerical work has been done to demonstrate the effects of the variation of the cross-flow velocity on the temperature distribution

A Note on the Temperature Distribution in a Porous Annulus

Unsteady temperature distribution for flow of an incompressible viscous fluid in a porous annulus has been investigated under the assumption that the rate of injection of the fluid at the inner cylinder is equal to the rate of suction of the fluid at the outer one. Viscous dissipation has been neglected while rate of heat generation in the fluid has been accounted for. An expression for the temperature distribution has been obtained using Laplace transform technique and taking the temperatures of the boundaries to be functions of time

Specific heat and Thermodynamics of Titanate Perovskite Materials

Specific heat and thermodynamical properties of the LaTiO3+?/2 have been investigated for the first time using extended rigid ion model (ERIM). With the increase of nominal hole doping ?, the system undergoes a phase change from an insulating phase to a metallic phase at ?cIM = 0.05 and the low-temperature antiferromagnetic phase disappears at ?cmag = 0.08. LaTiO3+?/2 has been suggested to have promising scientific and technological applications. Our computed specific heat results follow the same trends of variation with corresponding experimental data. The values of specific heats also increase with temperature. The theoretically computed thermodynamical properties of LaTiO3+?/2 compound are in good agreement with the available experimental results. Keywords: Thermodynamical properties, Perovskites, Specific heat, Debye temperature, Cohesive energ

Morphotypes vis-a-vis genetic parameters of Catla catla (Ham.) and Labeo rohita (Ham.) backcrosses

Backcross generations of Catla catla (Ham.) and Labeo rohita (Ham.) were developed in Central Agricultural Research Institute, Port Blair, South Andaman, India, using the technique of induced breeding for Indian Major Carps. The trend of morphometry through generation mean analysis indicates reduction of head size with respect to standard length, which is considered as a reduction of bone size within whole body biomass. The segregation pattern of dominant head morphometries of rohu and partial dominance of body morphometries of catla was supported by subsequent genetic evaluation through karyotyping, biochemical analysis and PCR-random amplified polymorphic DNA (RAPD) based molecular marker analysis indicating more genetic proximity of rohu with backcrosses than catla. The present study is significant for carp genetics with special reference to catla and rohu.Keywords: Backcross, catla, esterase, karyomorphology, molecular marker, morphometries, rohu.African Journal of Biotechnology Vol. 12(36), pp. 5503-551

Heat Transfer for Laminar Flow Through Parallel Porous Disks

The problem of temperature distribution and heat transfer for laminar flow through two parallel porous disks, has been investigated when the flow is entirely due t injection or suction at the two disks. Viscous dissipation terms have been included in the energy equation and the uniform injection/suction velocities at the two disks, are assumed to be small. The boundaries are maintained at constant temperature. The variation of temperature and Nusselt numbers at the two disks, is shown graphically, for various of the injection/suction velocities

MNCs' corporate social irresponsibility and foreign subsidiary performance

Research Summary: Building on the cognitive view of stakeholder evaluation, we propose that multinational corporations' (MNCs') socially irresponsible acts transcend geographic boundaries and negatively affect foreign subsidiary performance. Moreover, we propose that foreign subsidiaries' product innovation and marketing campaigns create strategic noise in the information space that can mitigate the negative effect of MNCs' corporate social irresponsibility (CSI) incidents occurring elsewhere on the performance of their foreign subsidiaries. We test our arguments on 335 subsidiaries of 42 multinational grocery retailers from 18 different home countries. Our analyses, based on a sample of 2185 subsidiary-year observations over the period of 9 years (2012–2020), largely support our core argument that CSI incidents negatively influence the sales growth of foreign subsidiaries. Managerial Summary: This research underscores the importance for MNC managers to be cognizant of the potential fallout from CSI incidents. With the global spread of information, MNCs' misconduct that occurs elsewhere can quickly impact the sales growth of foreign subsidiaries. The study found that product or service innovations are more effective than marketing campaigns in managing reputational damage, emphasizing the value of genuine, capability-enhancing strategies. Furthermore, the findings highlight the interconnectedness between socially responsible practices and innovation, suggesting that MNCs and their subsidiaries should focus on maintaining strong ethical standards while simultaneously fostering an environment conducive to innovation. This approach not only addresses the adverse effects of CSI but also strengthens the MNC's overall standing with its stakeholders.</p

Asymptotic quasisymmetric high-beta 3D MHD equilibria near axisymmetry

Quasisymmetry (QS), a hidden symmetry of the magnetic field strength, is known to support nested flux surfaces and provide superior particle confinement in stellarators. In this work, we study the ideal MHD equilibrium and stability of high-beta plasma in a large aspect-ratio stellarator. In particular, we show that the lowest-order description of a near-axisymmetric equilibrium vastly simplifies the problem of 3D quasisymmetric MHD equilibria, which can be reduced to a standard elliptic Grad-Shafranov equation for the flux function. We show that any large aspect-ratio tokamak, deformed periodically in the vertical direction, is a stellarator with approximate volumetric QS. We discuss exact analytical solutions and numerical benchmarks. Finally, we discuss the ideal ballooning and interchange stability of some of our equilibrium configurations.Comment: Accepted in Journal of Plasma Physics. Minor edits. Added new figures and a discussion on Anderson localization in QS-HBS stellarator