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5 results on '"Catalán, Pamela"'

1. A noisy channel less entangled than a pure can improve teleportation

Author

Roa, Luis, de Guevara, M. Loreto Ladrón, Soto-Moscoso, Matias, and Catalán, Pamela

Subjects
Quantum Physics
Abstract

In our work we consider the following problem in the context of teleportation: an unknown pure state have to be teleported and there are two laboratories which can perform the task. One laboratory uses a pure non maximally entangled channel but has a capability of performing the joint measurement on bases with a constrained degree of entanglement; the other lab makes use of a mixed X-state channel but can perform a joint measurement on bases with higher entanglement degrees. We compare the average teleportation fidelity achieved in both cases, finding that the fidelity achieved with the X-state can surpass the obtained with a pure channel, even though the X-state is less entangled than the latter. We find the conditions under which this effect occurs. Our results evidence that the entanglement of the joint measurement plays a role as important as the entanglement of the channel in order to optimize the teleportation process. We include an example showing that the average fidelity of teleportation obtained with a Werner state channel can be grater than that obtained with a Bell state channel., Comment: 6 pages, 1 figure

Published
2017

3. Valoración empresa Detroit Chile S. A. y su filial naviera Detroit Chile S. A

Author

Alvarado Mancilla, Jessica Grace, Muñoz Catalán, Pamela Aurelia, Sanjinés, René, Facultad de Economía y Negocios, and Escuela de Ingeniería en Administración de Empresas

Subjects
Valoración, Aspectos Económicos, Empresas, Líneas de Vapores
Abstract

Tesis (Ingeniero en Administración de Empresas) El presente seminario de título tiene corno objetivo principal entregar una adecuada estimación del valor económico de Detroit Chile S.A y su filial Naviera Detroit Chile S.A.ambas empresas con una amplia trayectoria en el mercado y con una diversificación de negocios corno la minería, turismo y naviera, razones que hace atractiva e interesante valorar esta empresa y su filial con el fin de encontrar un precio objetivo de la acción para tornar decisiones de inversiones futuras. Para lograr este objetivo se realizó una valoración económica a través de dos métodos corno la Metodología por Fundamentos y por Múltiplos de Empresas Comparables respectivamente.

Published
2014

5. [Features of adolescents hospitalized for a suicide attempt in a general hospital].

Author

Inzunza C C, Navia G F, Catalán P, Brehme C, and Ventura T

Subjects
Adolescent, Age Distribution, Age Factors, Child, Chile epidemiology, Conflict, Psychological, Depressive Disorder, Major diagnosis, Depressive Disorder, Major epidemiology, Female, Hospitals, General, Humans, Male, Risk Factors, Sex Distribution, Sex Factors, Socioeconomic Factors, Young Adult, Hospitalization statistics & numerical data, Suicide, Attempted psychology, Suicide, Attempted statistics & numerical data
Abstract

Background: Worldwide, suicide is the third cause of death among adolescents., Aim: To determine the socio-demographic context and clinical characteristics of children and adolescents hospitalized for suicidal behavior in a general hospital., Material and Methods: Between 2007 and 2009, we evaluated 47 patients with a mean age of 15.3 years (87% women) admitted for suicidal behavior at the Clinical Hospital of the Catholic University of Chile. Demographic data of the participants were registered. Clinical interviews were done by a child and adolescent psychiatrist., Results: Fifty seven percent of patients lived with both parents. Fifty one percent had previous suicide attempts and 68% had a previous psychiatric treatment. The main trigger was a conflict with parents in 66%. The psychiatric diagnoses were major depressive episode in 74.5% and pathological development of personality in 43%. All suicide attempts were with drugs and 6.4% were associated with cuts. Seventeen percent of attempts were classified as medically serious and they were more common in older age groups. Non severe attempts were observed mainly in women (92.3%). Acetaminophen intake was recorded in 8.5% of cases. Admission to hospital increased in the final quarter of the year. High costs of hospitalization were observed associated to stays in high complexity units., Conclusions: The population studied shows a high incidence of prior suicidal behavior. Most of the studied patients had attempts that were not classified as serious. These occurred predominantly in women in all age ranges. Medically serious suicidal behavior is mainly observed in older adolescents.

Published
2012
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