Non-standard Dirac adjoint spinor: The emergence of a new dual

In this present communication we provide a new derivation of the Dirac dual structure by employing a different approach from the originally proposed. Following a general and rigorous mathematical process to compute the dual structure, we investigate if is possible to break the existing "rigidity" in its primordial formulation. For this task, firstly, we look towards to understand the core of the Dirac spinors construction and then, we suggest to built an alternative dual structure for the Dirac spinor, which preserve an invariant norm under any $SL(2,\mathcal{C})$ transformation. Finally, we verify if the prominent physical contents are maintained or if it is affected by such construction.Comment: 7 pages, 0 figure

On the bilinear covariants associated to mass dimension one spinors

In this paper we approach the issue of Clifford algebra basis deformation, allowing for bilinear covariants associated to Elko spinors which satisfy the Fierz-Pauli-Kofink identities. We present a complete analysis of covariance, taking into account the involved dual structure associated to Elko. Moreover, the possible generalizations to the recently presented new dual structure are performed.Comment: 9 pages, 0 figure

Questing for Algebraic Mass Dimension One Spinor Fields

This work deals with new classes of spinors of mass dimension one in Minkowski spacetime. In order to accomplish it, the Lounesto classification scheme and the inversion theorem are going to be used. The algebraic framework shall be revisited by explicating the central point performed by the Fierz aggregate. Then the spinor classification is generalized in order to encompass the new mass dimension one spinors. The spinor operator is shown to play a prominent role to engender the new mass dimension one spinors, accordingly.Comment: 7 pages, final version to appear in Eur. Phys. J.

Agua potable para microcomunidades con energía solar

Ante la imposibilidad de modificar el clima para producir lluvias donde “se necesitan” y la magnitud de las inversiones para utilizar la infraestructura que puede construirse con la tecnología disponible, algunos grupos de investigadores, ingenieros, científicos y agentes sociales han optado por desarrollar tecnologías para la solución del suministro de agua potable para pequeñas comunidades que utilicen una energía que se encuentra disponible en cualquier lugar: la solar. Las tecnologías descritas en este artículo no son económicamente viables para poblaciones o ciudades. Han sido desarrolladas con vocación de atender la situación de comunidades muy pequeñas, aisladas y al margen de los beneficios del desarrollo convencional. Son sistemas o dispositivos que fueron concebidos sólo para refinar el agua. Ninguno de ellos es adecuado para purificar agua muy sucia o para hacerla potable en un solo paso.ITESO, A.C

On the Spinor Representation

A systematic study of the spinor representation by means of the fermionic physical space is accomplished and implemented. The spinor representation space is shown to be constrained by the Fierz-Pauli-Kofink identities among the spinor bilinear covariants. A robust geometric and topological structure can be manifested from the spinor space, wherein, for instance, the first and second homotopy groups play prominent roles on the underlying physical properties, associated to the fermionic fields.Comment: 16 page

Type-4 spinors: transmuting from Elko to single-helicity spinors

In this communication we briefly report an unexpected theoretical discovery which emerge from the mapping of Elko mass-dimension-one spinors into single helicity spinors. Such procedure unveils a class of spinor which is classified as type-4 spinor field within Lounesto classification. In this paper we explore the underlying physical and mathematical contents of the type-4 spinor.Comment: 9 pages, 0 figure

Determination of Operational Parameters for an Efficient Container Service in the Port of Guaymas

The port of Guaymas is located in Sea of Cortez in the Northern Pacific Coast of Mexico. Its hinterland is basically the Northwestern region of Mexico and the Southwestern United States. The Port currently focuses on bulk and liquid cargo and does not provide container services. In this paper, we explore some of the characteristics that a container service should have to be competitive in servicing the needs of the regional industry. Since the study deals with port selection decision from the industry’s point of view, we introduce a port selection model based on a Total Landed Cost (TLC) metric. The findings show that under the right conditions, the Port of Guaymas is an attractive option for the companies located in its hinterland

SOCIAL MOVEMENTS IN IRREGULAR WARFARE

Many influence professionals within the U.S. Department of Defense are aware of the power of social movements, but current training and doctrine does not address the key components that affect the success of a movement. When successful, social movements have been an effective driving force to enact change in their respective societies. Change can be seen in the form of major policy changes or, in some instances, a full transfer of power. Regardless of outcome, however, social movements are characterized by the social and political instability that accompanies them. In an era of intense global competition, the U.S. should leverage all mechanisms of competition to combat its adversaries. The purpose of this research is to examine the variables both quantitative and qualitative that influence a movements probability of success. This research identifies key variables that influence practitioners should consider and evaluate prior to committing support to a movement organization. Furthermore, this research supports the idea that non-violent action may be a better alternative to compete with US adversaries in environments with little to no U.S. presence.Major, United States ArmyMajor, United States ArmyApproved for public release. Distribution is unlimited