Triplicity of Quarks and Leptons

Quarks come in three colors and have electric charges in multiples of one-third. There are also three families of quarks and leptons. Whereas the first two properties can be understood in terms of unification symmetries such as SU(5), SO(10), or E_6, why there should only be three families remains a mystery. I propose how all three properties involving the number three are connected in a fivefold application of the gauge symmetry SU(3).Comment: 10 pages, including 2 figure

Singlet fermion dark matter and electroweak baryogenesis with radiative neutrino mass

The model of radiative neutrino mass with dark matter proposed by one of us is extended to include a real singlet scalar field. There are then two important new consequences. One is the realistic possibility of having the lightest neutral singlet fermion (instead of the lightest neutral component of the dark scalar doublet) as the dark matter of the Universe. The other is a modification of the effective Higgs potential of the Standard Model, consistent with electroweak baryogenesis.Comment: 9 pages, no figure

New Lepton Family Symmetry and Neutrino Tribimaximal Mixing

The newly proposed finite symmetry Sigma(81) is applied to the problem of neutrino tribimaximal mixing. The result is more satisfactory than those of previous models based on A_4 in that the use of auxiliary symmetries (or mechanisms) may be avoided. Deviations from the tribimaximal pattern are expected, but because of its basic structure, only tan^2 (theta_12) may differ significantly from 0.5 (say 0.45) with sin^2 (2 theta_23) remaining very close to one, and theta_13 very nearly zero.Comment: 8 pages, no figur

Nearly Mass-Degenerate Majorana Neutrinos: Double Beta Decay and Neutrino Oscillations

Assuming equal tree-level Majorana masses for the standard-model neutrinos, either from the canonical seesaw mechanism or from a heavy scalar triplet, I discuss how their radiative splitting may be relevant to neutrinoless double beta decay and neutrino oscillations.Comment: 12 pages, including 4 figures, talk at NANP9

THE IMPOSIBLE SUSTAINABILITY: APPLICATIONS OF RELATIONAL PERSPECTIVE IN TOURISM FIELDS

This short essays review aims to trigger a hot debate within the circle of sustainable studies. The concept of global warming as originally was formulated by expertise, or climate change paved the ways for the most important industrial countries to hear the eco-friendly paradigm.  In terms of the senior sociologists, J Broswimmer (2002), what humankind is doing with the planet only has a name, ecocide. Recently, interesting studies emphasized on the needs to change the current source of energy to mitigate the effects of climate change such as hurricanes, typhoons and extreme weather. However, to what an extent the current sustainable project may backfire is only a question of time. In this text we explain why

Natural Gauge Hierarchy in SO(10)

It is shown that a natural gauge hierarchy and doublet-triplet splitting can be achieved in SO(10) using the Dimopoulos-Wilczek mechanism. Artificial cancellations (fine-tuning) and arbitrary forms of the superpotential are avoided, the superpotential being the most general compatible with a symmetry. It is shown by example that the Dimopoulos-Wilczek mechanism can be protected against the effects of higher-dimension operators possibly induced by Planck-scale physics. Natural implementation of the mechanism leads to an automatic Peccei-Quinn symmetry. The same local symmetries that would protect the gauge hierarchy against Planck-scale effects tend to protect the axion also. It is shown how realistic quark and lepton masses might arise in this framework. It is also argued that ``weak suppression'' of proton decay can be implemented more economically than can ``strong suppression'', offering some grounds to hope (in the context of SO(10)) that proton decay could be seen at Superkamiokande.Comment: 26 pages in plain LaTeX, 5 figures available on request, BA-94-0

Secure Data Retrieval using CP-ABE Scheme in Military networks

The absolute most difficult issues in this situation are the implementation of authorization policies and the policies refresh for secure information recovery. Cipher text-policy attribute-based encryption is a promising cryptographic answer for the entrance control issues. However, the issue of applying CP-ABE in decentralized DTNs presents a few securities and protection challenges as to the attribute revocation, key escrow, and coordination of attributes issued from various experts. In this paper, we propose a secure information recovery conspire utilizing CP-ABE for decentralized DTNs where numerous key specialists deal with their attributes independently. We show how to apply the proposed instrument to securely and effectively deal with the confidential information dispersed in the disruption-tolerant military network. Versatile hubs in military conditions, for example, a war zone or a threatening locale are probably going to experience the ill effects of irregular network availability and continuous parcels. Disruption-tolerant network advances are getting to be effective arrangements that permit remote gadgets conveyed by warriors to speak with one another and get to the confidential data or direction reliably by misusing outer capacity hubs