A comparative analysis of the decoupling effects in a magnetic forming beryllium coil assembly

Digital computer for determining currents and forces in magnetic forming beryllium coil assembl

The NASTRAN Error Correction Information System (ECIS)

A data management procedure, called Error Correction Information System (ECIS), is described. The purpose of this system is to implement the rapid transmittal of error information between the NASTRAN Systems Management Office (NSMO) and the NASTRAN user community. The features of ECIS and its operational status are summarized. The mode of operation for ECIS is compared to the previous error correction procedures. It is shown how the user community can have access to error information much more rapidly when using ECIS. Flow charts and time tables characterize the convenience and time saving features of ECIS

On controllability and control laws for discrete linear repetitive processes

Repetitive processes are a distinct class of 2D systems (i.e. information propagation in two independent directions) of both systems theoretic and applications interest. They cannot be controlled by the direct extension of existing techniques from either standard (termed 1D here) or 2D systems theory. This article develops significant new results on the relationships between one physically motivated concept of controllability for the so-called discrete linear repetitive processes and the structure and design of control laws, including the case when disturbances are present

1978 Pesticide Use on Greenhouse Vegetable Crops in Ohio

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Inventories of Delaware's coastal vegetation and land-use utilizing digital processing of ERTS-1 imagery

There are no author-identified significant results in this report

INS3D: An incompressible Navier-Stokes code in generalized three-dimensional coordinates

The operation of the INS3D code, which computes steady-state solutions to the incompressible Navier-Stokes equations, is described. The flow solver utilizes a pseudocompressibility approach combined with an approximate factorization scheme. This manual describes key operating features to orient new users. This includes the organization of the code, description of the input parameters, description of each subroutine, and sample problems. Details for more extended operations, including possible code modifications, are given in the appendix

State Funded Marketing and Promotional Activities to Support a State's Winery Business; Are There Economic Returns?: A Case study using Texas Senate Bill 1370's support of the Texas Wine Industry

Texas wineries responded to a survey regarding their participation in wine marketing activities, annual changes in gross sales and level of sales growth they attribute to TDA’s support and if these funds create positive economic impacts to their winery. The response rate was 53 of the 93 registered wineries or a 57 percent response rate. Senate Bill 1370 funds allocate annually $725,000 to marketing and promotion of Texas wine. Combining the$725,000 and the normal funding of $250,000 identifies$975,000 in annual support to grow economic value. The most often utilized promotional activity is promotional materials and attending TDA supported wine events. Ninety-two percent of Texas wineries recognize an increase in awareness for the Texas wine industry and attribute 49 percent of the increase to state marketing efforts. A portion of TDA marketing funds were directed towards supporting wine events in Texas as they attract large numbers of consumers and allow promotional opportunities. One result found that 68 percent of consumers reported the event encouraged them to buy more Texas wine. Annual Economic Impact Results from supported marketing activities are estimated to create $8.42 per$1 of funding in direct sales increases, $15.33 per$1 of funding in economic impact of increases in sales and $1.54 per$1 of funding in value added impacts (based on IMPLAN Type II Economic Multiplier values). Annual Economic Impact Results from all funding activities are $2.16 per$1 of funding of total direct sales increases, $3.93 per$1 of funding in economic impacts of increases in sales and $.40 per$1 of funding in valued added impacts (based on IMPLAN Type II Economic Multiplier values). It is apparent that both direct and indirect economic results are positive returns to program funding and create economic growth in local economies.Texas Wine, Wine Economics, State Commodity Support, State Agricultural Marketing, State Commodity Marketing, Agribusiness, Agricultural and Food Policy, Marketing,

Classification and reduction of pilot error

Human error is a primary or contributing factor in about two-thirds of commercial aviation accidents worldwide. With the ultimate goal of reducing pilot error accidents, this contract effort is aimed at understanding the factors underlying error events and reducing the probability of certain types of errors by modifying underlying factors such as flight deck design and procedures. A review of the literature relevant to error classification was conducted. Classification includes categorizing types of errors, the information processing mechanisms and factors underlying them, and identifying factor-mechanism-error relationships. The classification scheme developed by Jens Rasmussen was adopted because it provided a comprehensive yet basic error classification shell or structure that could easily accommodate addition of details on domain-specific factors. For these purposes, factors specific to the aviation environment were incorporated. Hypotheses concerning the relationship of a small number of underlying factors, information processing mechanisms, and error types types identified in the classification scheme were formulated. ASRS data were reviewed and a simulation experiment was performed to evaluate and quantify the hypotheses

Pyrotechnic shock at the orbiter/external tank forward attachment

During the initial certification test of the forward structural attachment of the space shuttle orbiter to the external tank, pyrotechnic shock from actuation of the separation device resulted in structural failure of the thermal protection tiles surrounding the attachment. Because of the high shock associated with the separation bolt, the development of alternative low shock separation designs was initiated. Two concepts that incorporate a 5.08 centimeter frangible nut as the release device were developed and tested