Fluorescence antibunching microscopy

Breaking the diffraction limit in microscopy by utilizing quantum properties of light has been the goal of intense research in the recent years. We propose a quantum superresolution technique based on non-classical emission statistics of fluorescent markers, routinely used as contrast labels for bio-imaging. The technique can be readily implemented using standard fluorescence microscopy equipment

Analysis of a fixed-pitch X-wing rotor employing lower surface blowing

Lower surface blowing (LSB) is investigated as an alternative to the variable blade pitch requirement for the X-wing Circulation Control (CC) rotor concept. Addition trailing edge blowing slots on the lower surfaces of CC airfoils provide a bidirectional lift capability that effectively doubles the control range. The operational requirements of this rotor system are detailed and compared to the projected performance attributes of LSB airfoils. Analysis shows that, aerodynamically, LSB supplies a fixed pitch rotor system with the equivalent lift efficiency and rotor control of present CC rotor designs that employ variable blade pitch. Aerodynamic demands of bidirectional lift production are predicted to be within the capabilities of current CC airfoil design methodology. Emphasis in this analysis is given to the high speed rotary wing flight regime unique to stoppable rotor aircraft. The impact of a fixed pitch restriction in hover and low speed flight is briefly discussed

The Department of Defense Acquisition Workforce: Background, Analysis, and Questions for Congress

[Excerpt] This report provides background on the Department of Defense (DOD) acquisition workforce. Specifically, the report addresses the following questions: What is the acquisition workforce? What is the current size of the acquisition workforce? How has Congress sought to improve the acquisition workforce in the past? What are some potential questions for Congress to explore in the area of acquisition workforce management to improve acquisitions

Infinite Dimensional Free Algebra and the Forms of the Master Field

We find an infinite dimensional free algebra which lives at large N in any SU(N)-invariant action or Hamiltonian theory of bosonic matrices. The natural basis of this algebra is a free-algebraic generalization of Chebyshev polynomials and the dual basis is closely related to the planar connected parts. This leads to a number of free-algebraic forms of the master field including an algebraic derivation of the Gopakumar-Gross form. For action theories, these forms of the master field immediately give a number of new free-algebraic packagings of the planar Schwinger-Dyson equations.Comment: 39 pages. Expanded historical remark

Constraining Light Colored Particles with Event Shapes

Using recently developed techniques for computing event shapes with Soft-Collinear Effective Theory, LEP event shape data is used to derive strong model-independent bounds on new colored particles. In the effective field theory computation, colored particles contribute in loops not only to the running of alpha_s but also to the running of hard, jet and soft functions. Moreover, the differential distribution in the effective theory explicitly probes many energy scales, so event shapes have strong sensitivity to new particle thresholds. Using thrust data from ALEPH and OPAL, colored adjoint fermions (such as a gluino) below 51.0 GeV are ruled out to 95% confidence level. This is nearly an order-of-magnitude improvement over the previous model-independent bound of 6.3 GeV.Comment: 4 pages, 2 figure

Ducks on the torus: existence and uniqueness

We show that there exist generic slow-fast systems with only one (time-scaling) parameter on the two-torus, which have canard cycles for arbitrary small values of this parameter. This is in drastic contrast with the planar case, where canards usually occur in two-parametric families. Here we treat systems with a convex slow curve. In this case there is a set of parameter values accumulating to zero for which the system has exactly one attracting and one repelling canard cycle. The basin of the attracting cycle is almost the whole torus.Comment: To appear in Journal of Dynamical and Control Systems, presumably Vol. 16 (2010), No. 2; The final publication is available at www.springerlink.co

Peer Observation Consortium Creation and Implementation

TesisEl presente trabajo de investigación realizado en el Colegio San Vicente de Paul tiene como propósito determinar la relación entre el conocimiento sobre prevención en salud oral de los padres de familia y el índice de caries dental en los escolares de 6-12 años de edad. Esta investigación estuvo conformada por un universo total de 79 padres de familia y 79 escolares tanto de género masculino como femenino, con el fin de obtener datos necesarios y extraer información indispensable para las interrogativas básicas al igual que para los objetivos de la investigación. Se utilizó diferentes instrumentos como fueron el índice CPOD y ceod desarrollado por Klein Palmer y Knuston utilizado en dentición permanente y decidua respectivamente, para determinar la prevalencia de caries dental y para obtener el conocimiento en salud oral se aplicó a los padres de familia un cuestionario de 20 preguntas básicas individualizados por los siguientes temas: Elementos de la higiene Bucal, Interconsulta Dental y Dieta cariogénica divididas en 3 niveles deficiente, regular y bueno en una escala de Likert o escala vigesimal donde 0-10 puntos seria “Deficiente”,10-15 puntos correspondería a “Regular” y 16-20 correspondería a “Bueno”. Posteriormente con la información obtenida fue clasificada y calificada recogiendo todos los datos necesarios y seguidamente distribuirlos en los diferentes cuadros y gráficos, de igual manera se hizo la inspección, revisión y observación de los escolares con los criterios de inclusión de la investigación, así obteniendo y recolectando la prevalencia de caries con ayuda de una Ficha de Observación.En cuanto al conocimiento del total de 79 padres de familia sobre salud oral se puede decir que la mayoría de padres poseen un conocimiento sobre salud oral de 43,5% que es considerado como un conocimiento regular. Como resultado del diagnóstico clínico: el índice de caries CPOD obtenido en el colegio San Vicente de Paul fue de un total de piezas cariadas 40,5%, piezas perdidas 4,3% y piezas obturadas 31.9%. Palabras Claves: CPOD, ceo-d, prevención