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Symposium on Applied Computing

作者： P. Schneider S.K. Graham Computer Science and Telecommunications Program University of Missouri Kansas City USA

The Pesticide Identification Assistant (PIA) is a knowledge-based system designed to assist an analytical chemist with the identification of pesticide residues in food products using gas-liquid chromatography. The data are in the form of retention times and detector responses for a particular sample. The PIA system aids the analytic chemist in identifying the corresponding residue. The system has four goals: simplify routine analysis; provide interactive training for new analysts; provide an infallible memory supplement for experienced analysts; and provide a means of capturing expertise vulnerable to loss through retirement. A description is given of the problem domain and implementation concerns are addressed, particularly knowledge representation, inference techniques and user interface design. Particular challenges posed by the problem domain, particularly in the area of uncertainty, are considered. Plans for expansion and further research with the system are indicated.< >

关键词： Detectors Chemical analysis Cities and towns Food products Chemical industry Temperature computer science Drugs Laboratories Food industry

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The conditional and residual waiting time distributions of the M/G/1 queue

The conditional and residual waiting time distributions of t...

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Symposium on Applied Computing

作者： A. van de Liefvoort Computer Science Telecommunications Program University of Missouri Kansas City USA

A single-server queuing system with arrivals according to a Poisson process and general service times is considered. The system is assumed to be in steady state. Using linear algebraic techniques only, alternate derivations are given for the moments of the waiting time distributions and the Pollaczek-Khinchine transform equation for this queue. An explicit form is given for the residual response time and conditional waiting times. The first moment and the squared coefficient of variation of these distributions are derived, and lower bounds are given.< >

关键词： Transforms Laplace equations computer science Cities and towns Steady-state Poisson equations Integral equations Distribution functions Eigenvalues and eigenfunctions

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Classification of medical software

Classification of medical software

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Symposium on Applied Computing

作者： P. Schneider M.L.A. Hines Computer Science Telecommunications Program University of Missouri Kansas City USA

The current state of software engineering practices in medical software development is discussed. The authors focus on patient safety (freedom from harm by a medical device) and patient vulnerability (possible indirect harm due to erroneous output). A definition of medical software which can be viewed as a three-dimensional model for medical software classification is proposed. To reduce patient vulnerability and enhance patient safety, specific points of control are derived from the model, and the implications of classification and control for medical software are discussed.< >

关键词： Medical diagnostic imaging Software safety Medical control systems Safety devices Military computing Hardware programming Costs Medical services computer aided manufacturing

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Entropy as a measure of database information 6

Entropy as a measure of database information

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6th Annual computer Security Applications Conference, ACSAC 1990

作者： Unger, E.A. Harn, L. Kumar, V. Comput. and Inf. Sci. Kansas State Univ. ManhattanKS United States Computer Science Telecommunications Program University of Missouri at Kansas City United States

ISBN: (纸本)0818621052

An estimate of the information a database contains and the quantification of the vulnerability of that database to compromise by inferential methods is discussed. Such a measure could be used to evaluate the deterrent value of extant protection methods and provide a measure of the potential for inferential compromise through the use of one of the known attack tools. The authors explore the use of the concept of entropy as defined for information by C.E. Shannon (1948;1951), for the purpose of quantifying information content in a database and develop a measure of vulnerability based on entropy. Use of the measure, when exact disclosure through the use of a tracker is anticipated, is characterized for both static and dynamic databases at design and operational time. © 1990 IEEE.

关键词： Entropy

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An iterative solution to the four-peg Tower of Hanoi problem 90

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Proceedings of the 1990 ACM annual conference on Cooperation

作者： Appie van de Liefvoort Computer Science Telecommunications Program University of Missouri-Kansas City Kansas City Missouri

One of the variations of the Towers of Hanoi puzzle allows for p pegs, and for four pegs the solution to this variation is shown to have a simple structure which can be used to derive an iterative solution to the prob...

ISBN: (纸本)9780897913485

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Entropy as a measure of database information

Entropy as a measure of database information

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Annual computer Security Applications Conference

作者： E.A. Unger L. Harn V. Kumar Computer and Information Sciences Kansas State University USA Computer Science Telecommunications Program University of Missouri Kansas City USA

An estimate of the information a database contains and the quantification of the vulnerability of that database to compromise by inferential methods is discussed. Such a measure could be used to evaluate the deterrent value of extant protection methods and provide a measure of the potential for inferential compromise through the use of one of the known attack tools. The authors explore the use of the concept of entropy as defined for information by C.E. Shannon (1948; 1951), for the purpose of quantifying information content in a database and develop a measure of vulnerability based on entropy. Use of the measure, when exact disclosure through the use of a tracker is anticipated, is characterized for both static and dynamic databases at design and operational time.< >

关键词： Entropy Databases Protection Data security Area measurement Time measurement Information retrieval State estimation Information security Cryptography

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ON THE DESIGN OF A SINGLE-KEY-LOCK MECHANISM BASED ON NEWTONS INTERPOLATING POLYNOMIAL

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IEEE TRANSACTIONS ON SOFTWARE ENGINEERING 1989年第9期15卷 1135-1137页

作者： LAIH, CS HARN, L LEE, JY Department of Electrical Engineering National Cheng Kung University Tainan Taiwan Republic of China Computer Science and Telecommunications Program University of Missouri Kansas City MO 64110

A new single-key-lock (SKL) mechanism used for implementing the access matrix of the computer protection system is proposed. The key selection is very flexible. The lock values are generated recursively based on the Newton's interpolating polynomial. The insertion of a new user/file into the system can be successfully implemented without recomputing all locks/keys. [ABSTRACT FROM AUTHOR]

关键词： Access control access matrix Newton's interpolation polynomial protection security user-hierarchy

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Two new efficient cryptosystems based on Rabin's scheme: alternatives to RSA cryptosystem

Two new efficient cryptosystems based on Rabin's scheme: alt...

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Annual computer Security Applications Conference

作者： L. Harn T. Kiesler Computer Science Telecommunications Program University of Missouri Kansas City Kansas City MO USA

Proposes two distinct cryptosystems based on Rabin's scheme. The first incorporates coding theory and provides encryption only. The second provides simultaneously both private encryption and digital signature for network users. In the cases where the second scheme provides only encryption or only digital signature, the scheme provides that the bit ratio between plaintext and ciphertext is 1:1, i.e. equivalent to that of the RSA scheme.< >

关键词： Digital signatures Cities and towns Public key computer science Codes Public key cryptography Data mining Decoding Bit rate

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An extended cryptographic key generation scheme for multilevel data security

An extended cryptographic key generation scheme for multilev...

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Annual computer Security Applications Conference

作者： Lein Harn Yaw-Ruey Chien T. Kiesler Computer Science Telecommunications Program University of Missouri Kansas City Kansas City MO USA

S. Akl and P. Taylor (Proc. Crypto-82, p.237-250, 1982) proposed an elegant solution to the multilevel key distribution problem, using a cryptographic approach. In the present work, two problems associated with the Akl-Taylor scheme are considered. First, a time-memory tradeoff technique to overcome the problem of the extremely large memory space required by the Akl-Taylor scheme is proposed. Second, an extended scheme that localizes within a small region as much as possible the inserting/deleting problem associated with the Akl-Taylor scheme is proposed.< >

关键词： Cryptography Data security Multilevel systems Cities and towns computer network management Project management Information security computer science Hardware Protection

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Electronic Meeting System Experience at IBM

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Journal of Management Information Systems 1989年第3期6卷 25-43页

作者： Vogel, Douglas R. Nunamaker Jr., Jay F. Martz Jr., William Benjamin Grohowski, Ronald McGoff, Christopher Assistant Professor of MIS College of Business and Public Administration University of Arizona Tucson Head Department of MIS University of Arizona Professor of MIS and Computer Science University of Arizona Chairman Association for Computing Machinery Curriculum Committee on Information Systems University of Arizona Director of MIS and Telecommunications IBM Systems Integration Division Bethesda Maryland IBM Program Manager IBM Systems Integration Division Bethesda Maryland

Electronic meeting systems (EMS) have been introduced inside IBM in a cooperative effort between IBM and the University of Arizona to address the demands of an increasingly competitive and turbulent business environment. This paper presents and integrates the results of two field studies intended to evaluate the implications of electronic meeting system use at IBM. The first study focused on session process and outcome effectiveness, efficiency, and user satisfaction at a single IBM site. The second study collected data on EMS tool use and facilitation approach within sessions at four IBM sites. The two studies are complementary in reflecting the impact of computer-based support on group process and outcome. Effectiveness, efficiency, and user satisfaction are generally enhanced independent of type of activity supported or perspective, e.g., participant, facilitator, or session initiator. Facilitation training is a critical requirement for successful integration and application of electronic meeting system software and procedures in the group processes this paper addresses. [ABSTRACT FROM AUTHOR]

关键词： decision rooms Electronic meetings facilitation of electronic meetings group decision processes

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