The Valuation of Mortgage Backed Securities with Stochastic Probabilities of Default and Prepayment

The aim of this paper is to provide a new approach to project the Mortgage Backed Securities (MBS) cash flows in emerging markets where collateral information is limited, wrong or scarce. Under this framework, we use the Cox Process to model stochastic probabilities of prepayment and default. The model deals with general intensity dynamics and is applied to the starting MBS Mexican market.Mortgage valuation, MBS prepayment, MBS default, MBS curtailment, Cox Process.

Dual Immersion Programs and their Implications: Focused Analyses on the Educational History

As a social construct, education fulfills the necessary elements, ideologies, and rituals required to construct social norms for society. What a society deems as a norm determines the sentiments and direction that a nation will take. These normative tendencies lead to national identity and national security through policies and legislation within the nations\u27 utilization of sovereignty. National interest being influenced by global events and ethnocentric ideologies has seen cycles leading to different immigration, educational, and economic policies. This paper analyzes dual immersion programs, which have been treated as a controversial topic due to its implications on national security and identity. Dual immersion programs are a method of educating students through bilingual means. This study looks at the evolution of bilingual programming through a historical lens and identifies their economic implications within communities, including the outcomes of racialized tendencies. Whereas the racial tendencies within programs are concealed, I hypothesize that the implementation of dual language immersion programs leads to a significant decrease in the use of the Spanish language. This analysis illuminates a driver of the recent decline of Spanish speaking interactions within families and communities. These declines expose assimilation devices that occur in homes due to educational institutions. These programs claim to have good intentions; however, assimilation through educational policies nevertheless produce the contrary outcomes while bringing negative and unforeseen consequences. This research thusly identifies stakeholders of this vanishing linguistic culture and the dynamics required to repair disparities within communal and educational institutions

Sensitivity analysis of Monte Carlo model of a gantry-mounted passively scattered proton system

PURPOSE: This study aimed to present guidance on the correlation between treatment nozzle and proton source parameters, and dose distribution of a passive double scattering compact proton therapy unit, known as Mevion S250. METHODS: All 24 beam options were modeled using the MCNPX MC code. The calculated physical dose for pristine peak, profiles, and spread out Bragg peak (SOBP) were benchmarked with the measured data. Track-averaged LET (LET RESULTS: For the physical dose distribution, the MCNPX MC model matched measurements data for all the options to within 2 mm and 2% criterion. The Mevion S250 was found to have a LET CONCLUSIONS: This study revealed the importance of considering detailed beam parameters, and identifying those that resulted in large effects on the physical dose distribution and LETs for a compact proton therapy machine

Quantum tunneling and level crossings in the squeeze-driven Kerr oscillator

This research was supported by the NSF CCI grant (Award No. 2124511). F.P.-B. is grateful for funding from the European Union's Horizon 2020 research and innovation program under Grant No. PID2019-104002GB-C21 funded by MCIN/AEI/10.13039/501100011033 and, as appropriate, by ERDF A way of making Europe, by the European Union, or by the European Union Next Generation EU/PRTR. Computing resources supporting this work were partially provided by the CEAFMC and Universidad de Huelva High Performance Computer located on the Campus Universitario el Carmen and funded by FEDER/MINECO Project No. UNHU-15CE-2848.The quasienergy spectrum recently measured in experiments with a squeeze-driven superconducting Kerr oscillator showed good agreement with the energy spectrum of its corresponding static effective Hamiltonian. The experiments also demonstrated that the dynamics of low-energy states can be explained with the same emergent static effective model. The spectrum exhibits real (avoided) level crossings for specific values of the Hamiltonian parameters, which can then be chosen to suppress (enhance) quantum tunneling. Here we analyze the spectrum and the dynamics of the effective model up to high energies, which should soon be within experimental reach. We show that the parameter values for the crossings, which can be obtained from a semiclassical approach, can also be identified directly from the dynamics. Our analysis of quantum tunneling is done with the effective flux of the Husimi volume of the evolved states between different regions of the phase space. Both initial coherent states and quench dynamics are considered. We argue that the level crossings and their consequences on the dynamics are typical to any quantum system with one degree of freedom, whose density of states presents a local logarithmic divergence and a local step discontinuity.CEAFMCEuropean Union Next Generation EU/PRTRUniversidad de Huelva High Performance ComputerNational Science Foundation 2124511 NSFEuropean Commission ECMinisterio de Economía y Competitividad UNHU-15CE-2848 MINECOHorizon 2020 MCIN/AEI/10.13039/501100011033, PID2019-104002GB-C21European Regional Development Fund ERD

“CORRELACIÓN CLÍNICA Y BIOQUÍMICA DE LA CALIFICACIÓN DE APGAR AL MINUTO”

La valoración de Apgar había sido considerada como un reflejo de asfixia perinatal y predictor de secuelas neurológicas, pero en la actualidad el mejor método para evaluar el riesgo fetal de asfixia ha sido a través de la medición del pH de la arteria del cordón umbilical

El mercado de la fe en Toluca. Análisis sociocultural de los productos religiosos y esotéricos en el mercado 16 de septiembre

Se trata de una investigación en la que se observan las modalidades de mercadeo de productos de la fe, lo que genera un perfil de una demanda y oferta muy singularEl poder observar a distintos niveles y desde un enfoque múltiple la creación y recreación de los espacios arquitectónicos, de consumo, socialización y vida cotidiana del mercado 16 de Septiembre constituye hacer una narrativa sociocultural de lo que hoy en día representa la vida en el mercado, el imago mercatus. A su vez esto permitiría plasmar, a un tiempo aquellos elementos, símbolos, acciones y situaciones que metaforizan el sístole y diástole de lo trascendente, de la historia y cultura de una región que gira y se desarrolla al ritmo de las prácticas y creencias en el mercado. El documento, producto de la investigación dará a conocer aquellos aspectos que en cierta forma han acompañado la vida de un mercado, el mercado 16 de Septiembre de Toluca, esencialmente la vida religioso-cultural, sus formas, creencias y mitos que se construyen de acuerdo al transcurrir del tiempo y que en gran medida tienen repercusiones y transformaciones directas o indirectas mediante el consumo, dado el caso particular de esta investigación, en el consumo de los artículos religiosos y esotéricos

Elaboración de un Plan de Negocios para la instalación de Cabañas para Turísticas, en Valle de Bravo, Estado de México

La hipótesis que se intenta comprobar consiste en: “La elaboración de un plan de negocios permitirá aplicar una estrategia adecuada para la construcción y puesta en marcha de cabañas turísticas en San Gaspar, Valle de Bravo”. En el primer capítulo se abordan una serie de aspectos que permiten ubicarnos dentro de la temática. En primer lugar, se define lo que es el plan de negocios; enseguida se resalta la importancia de la elaboración de un Plan de Negocios para crear y echar en marcha una empresa; en función de ello, se incluye un apartado en el que se hace una descripción general sobre las Micro, Pequeñas y Medianas Empresas, así como la relación que existe entre éstas y la elaboración del plan de negocios. Esto permite conocer conceptualmente cada uno de los términos, de esta manera, el tercer apartado explica la forma en que se elabora un plan de negocios. En lo que respecta al segundo capítulo, en él se hace un diagnóstico del municipio de Valle de Bravo, con base en aspectos de tipo demográfico, social y económico. La finalidad de realizar este diagnóstico es la de ubicarnos espacialmente en el lugar objeto de estudio de tal manera, que por medio del conocimiento de éste se puedan planear y programar estrategias y un plan de negocios de acuerdo a las características del lugar, en donde la vocación productiva orientada al turismo justifica en buena parte la decisión por optar por realizar un trabajo de esta naturaleza, el cual está orientado en buena medida a la prestación de un servicio turístico

La política pública de alimentación y nutrición saludable: un análisis de su implementación en la zona rural de la provincia de Lima

El trabajo de investigación tuvo como objetivo principal conocer las dinámicas de la implementación de la política pública de la alimentación y nutrición saludable. Los objetivos específicos estuvieron orientados a definir las características de la Estrategia Sanitaria Nacional de Alimentación y Nutrición Saludable (ESNANS); determinar las dinámicas en su implementación; y analizar las consecuencias de la misma en una zona rural de la provincia de Lima. La hipótesis planteó que la ESNANS es una política de salud pública que ha considerado la pertinencia cultural y el perfil epidemiológico de la población rural de la provincia de Lima. En su implementación se aplicaron mecanismos de coordinación entre las instituciones estales involucradas en el proceso. El trabajo de investigación pudo constatar que la capacidad de gestión del personal del primer nivel de atención fue muy débil debido principalmente al desconocimiento de la Estrategia y a la alta rotación del mismo. Al analizar la Estrategia de Alimentación Saludable en el marco de una política pública, se concluyó que es indispensable establecer una agenda intergubernamental y multisectorial para redefinir el rumbo de las políticas que buscan atender los componentes de sobrepeso, obesidad y hábitos alimenticios. Dichas condiciones pueden ser tan letales como la anemia y la desnutrición crónica, por lo cual constituyen un problema grave para la salud pública. En lo que respecta a la implementación de política pública, la Estrategia de Alimentación Saludable plantea la necesidad de incorporar mecanismos de gestión y coordinación que aborden de manera sistémica la nutrición y alimentación en sus componentes de anemia, desnutrición crónica infantil, sobrepeso y obesidad en toda la población.The main objective of the research was to know the dynamics of the implementation of the public policy of food and healthy nutrition. The specific objectives were to define the characteristics of the National Sanitary Strategy of Food and Healthy Nutrition (ESNANS); determine the dynamics in its implementation; and analyze the consequences of it in a rural area of the province of Lima. The hypothesis stated that the ESNANS is a public health policy that has considered the cultural relevance and epidemiological profile of the rural population of the province of Lima. In its implementation, coordination mechanisms were applied among the state institutions involved in the process. The research work showed that the management capacity of the first level of health care was very weak due mainly to the lack of awareness and the high turnover of the Strategy. When analyzing the Healthy Food Strategy in a public policy context, the conclusion was that it is indispensable to establish an intergovernmental and multisectorial agenda to redefine the direction of policies that involved the components of overweight, obesity and eating habits. Such conditions can be as lethal as anemia and chronic malnutrition. Therefore, they constitute a serious public health problem. According to the implementation of public policy, the Healthy Food Strategy raises the need to incorporate management and coordination mechanisms that systematically address nutrition and food in its components of anemia, chronic child malnutrition, overweight and obesity throughout the population.Tesi

Heart sparing radiotherapy techniques in breast cancer: A focus on deep inspiration breath hold

Adjuvant radiation therapy is a critical component of breast cancer management. However, when breast cancer patients receive incidental radiation to the heart, there is an increased risk of cardiac disease and mortality. This is most common for patients with left-sided breast cancers and those receiving nodal irradiation as part of treatment. The overall risk of cardiac toxicity increases 4-16% with each Gray increase in mean heart radiation dose, with data suggesting that no lower limit exists which would eliminate cardiac risk entirely. Radiation techniques have improved over time, leading to lower cardiac radiation exposure than in the past. This decline is expected to reduce the incidence of radiation-induced heart dysfunction in patients. Deep inspiration breath hold (DIBH) is one such technique that was developed to reduce the risk of cardiac death and coronary events. DIBH is a non-invasive approach that capitalizes on the natural physiology of the respiratory cycle to increase the distance between the heart and the therapeutic target throughout the course of radiation therapy. DIBH has been shown to decrease the mean incidental radiation doses to the heart and left anterior descending coronary artery by approximately 20-70%. In this review, we summarize different techniques for DIBH and discuss recent data on this technique