Dissertation com jan 2008 (5 résultats)

Taschenbuch. Etat : Neu. Neuware - We present the results of a large-area survey for millisecond pulsars (MSPs) at moderately high galactic latitudes with the 64 m Parkes radio telescope, along with follow-up timing and optical studies of the newly-discovered pulsars and several others. Major results include the first precise measurement of the mass of a fully recycled pulsar and.…

Taschenbuch. Etat : Neu. Neuware - The style of leadership in an interdisciplinary collaboration is an existing gap in collaborative literature. Studying the leaders in an existing interdisciplinary collaboration provided a description of the leadership style of the collaborative leaders of three behavioral health teams in New York City. This qualitative phenomenological study used structured interviews of interdisciplinary disciplines to describe the leadership style of the collaborative leaders within a team environment. The data collection and analysis were conducted using codes to identify dominant themes. The themes presented perceptions and experiences of three teams interacting collaboratively. The coding process identified five major themes that are unique components of leadership that suggests new methods of building collaborative leadership within the interdisciplinary team dynamics.…

Taschenbuch. Etat : Neu. Neuware - The problem addressed in the current study was that disruptive student behavior is detrimental to learning because quality teacher-student interaction time is reduced. The purpose of this ethnographic research study was to explore relationship between disruptive behavior of students and leadership styles of teachers, parents and school leaders. Results indicated that in some cases, an individualized approach could help the K-6 elementary student by reducing their disruptive behavior. However, it was also confirmed that as part of this individualized approach, school-wide implementation might provide the level of support needed to prevent future disruptive behavioral problems as well as providing the positive role models for students to observe and emulate.…

Taschenbuch. Etat : Neu. Neuware - This study examines suicide perceptions of police officers from two groups, east coast officers and west coast officers. To investigate this problem, the researcher conducted a quantitative analysis utilizing a previously validated instrument. Participants of this study voluntarily completed the Suicide Attitude Questionnaire (SUIATT), administered by the National Police Suicide Foundation. The participants consisted of 75 sworn officers from each group varying in age, education, experience, and job description. This study also examined various leadership styles and makes recommendations for leaders to improve upon or implement police suicide prevention training. Risks factors and warning signs were identified by participating officers, which may assist supervisors in identifying potential officers at risk.…

Taschenbuch. Etat : Neu. Neuware - The famous Black-Scholes model was the starting point of a new financial industry and has been a very important pillar of all options trading since. One of its core assumptions is that the volatility of the underlying asset is constant. It was realised early that one has to specify a dynamic on the volatility itself to get closer to market behaviour. There are mainly two aspects making this fact apparent. Considering historical evolution of volatility by analysing time series data one observes erratic behaviour over time. Secondly, backing out implied volatility from daily traded plain vanilla options, the volatility changes with strike. The most common realisations of this phenomenon are the implied volatility smile or skew. The natural question arises how to extend the Black-Scholes model appropriately. Within this book the concept of stochastic volatility is analysed and discussed with special regard to the numerical problems occurring either in calibrating the model to the market implied volatility surface or in the numerical simulation of the two-dimensional system of stochastic differential equations required to price non-vanilla financial derivatives. We introduce a new stochastic volatility model, the so-called Hyp-Hyp model, and use Watanabe's calculus to find an analytical approximation to the model implied volatility. Further, the class of affine diffusion models, such as Heston, is analysed in view of using the characteristic function and Fourier inversion techniques to value European derivatives.…