5,479 research outputs found

    CDCCRAY

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    The CDCCRAY is a FORTRAN subroutine which runs on the Cray and converts 32 or 64 bit binary data from the CDC Cyber 205 to the corresponding 64 bit binary data for the Cray X-MP. The CDCCRAY's purpose, usage, storage, timing consideration, and linkage editing are discussed

    Quantitative absorption and fluorescence studies of NO between 1060 and 2000 A

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    Synchrotron radiation in the 1060 to 2000 A region was used to measure the average absorption and fluorescence cross sections of NO and to determine approximate photodissociation quantum yields. Several vibrational levels of the D(2) sigma(+), E(2) sigma(+), and B(2) delta states have high fluorescence quantum yields. The C(2) and B(2) states do not fluoresce when the excitation energies are above the first dissociation limit, in accord with previous experiments. In general, the fluorescence yields decrease with increasing photon energy. The quantitative measurements are compared with spectroscopic observations and are found to be reasonably consistent

    The role of psychological distance in value creation

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    Purpose – The field of service research has devoted consider able attention to the customer's role as value creator, but there is a lack of research on understanding customers' psychological processes in value creation. This paper highlights the importance of psychological distance in value-creation processes. Psychological distance is the customer's perceived distance from service interactions in terms of spatial distance, temporal distance social distance and hypothetical distance. Critically, psychological distance influences cognitive processes and can influence how customers think and feel about the service interaction. An appreciation of psychological distance within service contexts can help managers to tailor the interaction in order to facilitate value creation. Methodology/approach – In this conceptual paper, we build on psychology research and service research to develop seven propositions that explore how psychological distance can operate within service interactions and how this might influence value creation. Findings – We divide the propositions into three sections. The first concerns how perceived psychological distance from the service interaction can act as a barrier to entering a service interaction. In particular, we consider the influence of social distance and spatial distance within the context of service interactions. The second section examines how psychological distance to the expected point of service use can influence how customers construe the service and the value creation. The third aspect addresses customer-specific characteristics that can impact on value creation by influencing perceived psychological distance toward the service

    Quantitative absorption and fluorescence study of CO from 1060 to 1550 A

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    Measurement of the photoabsorption cross section of CO in the 1060-1550 A region using synchrotron radiation is described. The oscillator strengths for the transitions from CO (Chi1Sigma+ to various excited states are obtained from these data. Fluorescence from excited CO was observed in the 1150 to 3000 A and 3000 to 8000 A regions. The quantum yields for the production of fluroescence from the Alpha(1)P and B(1)Sigma(+) states are unity because their excitation energies are below the dissociation limit. The C(1)Sigma(+) , v = O level has significant fluorescence quantum yields both in the UV and visible region, but the yields for the E(1)Pi, v = O and C(1)Sigma(+), v = 1 levels are very small. The C(1)Sigma(+), v = 1 level is presumably predissociated. The cross sections for the production of fluroescence from the a'(3)Sigma(+), d(3)Delta sub 1, e(3)Sigma(-) yields a(3)Pi, and B(1)Sigma(+), C(1)Sigma(+) yields A(1)Pi transitions upon excitation from the X(1)Sigma(+) were measured

    Crossref for the Cray

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    Crossref for the Cray is a tool used to obtain information about the contents of a library generated with a BUILD statement under COS. It produces a list of all modules in the library; a summary table by modules containing module size, ENTRY POINTS, referenced COMMONs, and required EXTERNALs; a list of unsatisfied EXTERNALs; a summary table of ENTRY POINTS and optionally EXTERNALs; a list of COMMONs; a table of statistics and a table of contents. The output can be formatted to 8 1/2 inch vertical paper or CRT display

    CRAYCDC

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    The CRAYCDC is a FORTRAN subroutine which runs on the CDC Cyber 205. It converts 64 bit binary data from a Cray computer (1S or X-MP) to the corresponding 64 bit binary data for a Cyber 205. The purpose, usage, storage, timing consideration, access to CRAYCDC, are outlined

    Leading-edge slat optimization for maximum airfoil lift

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    A numerical procedure for determining the position (horizontal location, vertical location, and deflection) of a leading edge slat that maximizes the lift of multielement airfoils is presented. The structure of the flow field is calculated by iteratively coupling potential flow and boundary layer analysis. This aerodynamic calculation is combined with a constrained function minimization analysis to determine the position of a leading edge slat so that the suction peak on the nose of the main airfoil is minized. The slat position is constrained by the numerical procedure to ensure an attached boundary layer on the upper surface of the slat and to ensure negligible interaction between the slat wake and the boundary layer on the upper surface of the main airfoil. The highest angle attack at which this optimized slat position can maintain attached flow on the main airfoil defines the optimum slat position for maximum lift. The design method is demonstrated for an airfoil equipped with a leading-edge slat and a trailing edge, single-slotted flap. The theoretical results are compared with experimental data, obtained in the Ames 40 by 80 Foot Wind Tunnel, to verify experimentally the predicted slat position for maximum lift. The experimentally optimized slat position is in good agreement with the theoretical prediction, indicating that the theoretical procedure is a feasible design method

    Calculation of energy levels and transition amplitudes for barium and radium

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    The radium atom is a promising system for studying parity and time invariance violating weak interactions. However, available experimental spectroscopic data for radium is insufficient for designing an optimal experimental setup. We calculate the energy levels and transition amplitudes for radium states of significant interest. Forty states corresponding to all possible configurations consisting of the 7s7s, 7p7p and 6d6d single-electron states as well as the states of the 7s8s7s8s, 7s8p7s8p and 7s7d7s7d configurations have been calculated. The energies of ten of these states corresponding to the 6d26d^2, 7s8s7s8s, 7p27p^2, and 6d7p6d7p configurations are not known from experiment. Calculations for barium are used to control the accuracy.Comment: 12 pages, 4 table
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