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  • Preliminary results of an experimental study of the mechanical design process

    Creator:
    Ullman, David G., Stauffer, Larry A., and Dietterich, Thomas G.
    Abstract:
    This paper presents the initial results from an empirical study of me­chanical design engineers. In this study, six engineers were video-taped solving real mechanical design problems. Preliminary analysis of this protocol data has yielded several important findings, including (a) me­chanical designers progress from systematic to opportunistic behavior as the design...
    Resource Type:
    Technical Report
    Full Text:
    . Dietterich Department of Computer Science Oregon State University Corvallis , Oregon 97331

  • Position estimation

    Creator:
    McKenney, Paul E.
    Abstract:
    Acoustic position estimation is used where high accuracy navigation is required over a small area, such as for searching or for collecting gravitational or geomagnetic data. In this position estimation method, a surface ship or submersible periodically sends out a high-frequency acoustic 'ping' at a prearranged frequency. This ping is...
    Resource Type:
    Technical Report
    Full Text:
    Paul E. McKenney Department of Computer Science Oregon State University Corvallis, Oregon 97331

  • Pipelining performance of structured dataflow networks

    Creator:
    Tonge, Fred. M.
    Abstract:
    System architectures for interconnecting large numbers of processors are being widely studied [AG82,TH75,TR82]. Of particular interest in such architectures is the exploitation of concurrency among processors. This concurrency can be parallelism, in which different parts of a single data case are processed at the same time, or pipelining, in which...
    Resource Type:
    Technical Report
    Full Text:
    DATAFLOW NETWORKS Fred M. Tonge Department of Computer Science Oregon State University Corvallis

  • Computer science and computer engineering research equipment

    Creator:
    Tonge, Fred M.
    Abstract:
    This grant supported acquisition of a minicomputer system for departmental research. The equipment selected is a DEC VAX-11/750 system, installed in remodeled space in the Computer Science (formerly Farm Crops) Building. Grant funds for equipment acquisition were supplemented by support from the Tektronix Foundation. After completion of the physical facilities...
    Resource Type:
    Technical Report
    Full Text:
    COMPUTER SCIENCE AND COMPUTER ENGINEERING RESEARCH

  • Type systems of object-oriented programming languages

    Creator:
    Sandberg, David W.
    Abstract:
    Three different approaches to type checking have been taken in object-oriented programming languages. Smalltalk-80 uses run-time type checking. C++ uses subtypes. A third alternative is to use parameterized types. We examine the difficulties of programming in an object-oriented fashion with compile-time type checking and argue that parameterized types are better...
    Resource Type:
    Technical Report
    Full Text:
    - ORIENTED PROGRAMMING LANGUAGES David W. Sandberg Department of Computer Science Oregon State

  • Biomedical knowledge acquisition : three systems reviewed

    Creator:
    Springsteel, Frederick Neil
    Abstract:
    Recent advances in diagnostic expert systems have been limited by the crucial Knowledge Acquisition Problem: to bring expert heuristics into logical, condi­tional rule forms useful for computer aided diagnosis. Some automatic systems with potential biomedical relevance that do acquire knowledge are reviewed here, and analyzed from the standpoint of possible...
    Resource Type:
    Technical Report
    Full Text:
    reviewed Frederick Neil Springsteel Department of Computer Science Oregon State University Corvallis

  • Expert systems for exploratory data analysis : towards automated research

    Creator:
    Springsteel, Fred Neil
    Abstract:
    Exploratory Data Analysis (EDA) is a lesser known field which has outgrown the bounds of statistics. It differs from ordinary, or “confirmatory”, data analysis. Originated by John Tukey, EDA aspires toward an open-ended meta-goal: to discover “all interesting” [nontrivial, normal form, valid] hypo­theses about a domain that is represented by...
    Resource Type:
    Technical Report
    Full Text:
    Science University of Missouri-Columbia Columbia, MO 65211 (on sabbatical) and Oregon State

  • Typographic style is more than cosmetic

    Creator:
    Oman, Paul W. and Cook, Curtis R.
    Abstract:
    There is disagreement about the role and importance of typographic style (source code formatting and commenting) in program comprehension. Results from experiments and opinions in programming style books are mixed. This paper presents principles of typographic style consistent and compatible with the results of program comprehension studies. It introduces the...
    Resource Type:
    Technical Report
    Full Text:
    COSMETIC Pau1 W. Oman Computer Science Department University of Idaho Moscow, Idaho 83843 Curtis R

  • Effects of programming experience in debugging semantic errors

    Creator:
    Oman, Paul W., Cook, Curtis R., and Nanja, Murthi
    Abstract:
    This paper presents the results of a controlled experiment comparing debugging abilities of novice, intermediate and skilled student programmers. Debugging performance differences were studied using two single-page Pascal programs: a binary search program and a median calculation program. Two types of semantic errors, array bounds and undefined variable, and two...
    Resource Type:
    Technical Report
    Full Text:
    Science Oregon State University Corvallis, Oregon 97331 Effects of Programming Experience in

  • Particularity in engineering data

    Creator:
    Rehfuss, Steve, Freiling, Michael J., and Alexander, Jim
    Abstract:
    A database to be used by electrical circuit design, test, and repair expert systems must support both structural data and inferential data about the circuit. It is well known that engineering databases must support dynamic schema (re)definition of the structural data and entity-based access to it. We analyze this requirement...
    Resource Type:
    Technical Report
    Full Text:
    . Particularity in Engineering Data* Technical Report No. 84-40-3 Steve Rehfuss Computer Science Department