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Proceedings of the IEEE

Issue 2 • Date Feb. 1989

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Displaying Results 1 - 9 of 9
  • Calibration case study of natural source electromagnetic array data recorded over a well in Oregon

    Publication Year: 1989 , Page(s): 334 - 337
    Save to Project icon | Request Permissions | Click to expandAbstract | PDF file iconPDF (315 KB)  

    Experimental results are described for a data acquisition method originally developed by F.X. Bostick (1986) that measures the electric field continuously along a profile. A three step sequence is used in the automated interpretation of electromagnetic (EM) array data. Following some preliminary steps in which an initial model is constructed, each interpretive refinement of the model consists of (... View full abstract»

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  • Petroleum exploration using controlled-source electromagnetic methods

    Publication Year: 1989 , Page(s): 338 - 362
    Cited by:  Papers (3)  |  Patents (31)
    Save to Project icon | Request Permissions | Click to expandAbstract | PDF file iconPDF (2546 KB)  

    A tutorial overview is presented of controlled-source electromagnetic (CSEM) geophysical methods as they are applied in petroleum exploration. CSEM methods utilize man-made sources to investigate the variation of electrical conductivity in the Earth, typically in the depth range of hundreds of meters to several kilometers. Over the frequency range used in CSEM (typically 0.1 Hz to 10 KHz), displac... View full abstract»

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  • The pick operating system: A practical guide [Book Review]

    Publication Year: 1989 , Page(s): 363
    Save to Project icon | Request Permissions | PDF file iconPDF (125 KB)  
    Freely Available from IEEE
  • Unix system programming [Book Review]

    Publication Year: 1989 , Page(s): 363 - 364
    Save to Project icon | Request Permissions | PDF file iconPDF (256 KB)  
    Freely Available from IEEE
  • The computer and the mind - An introduction to cognitive science [Book Review]

    Publication Year: 1989 , Page(s): 364
    Save to Project icon | Request Permissions | PDF file iconPDF (141 KB)  
    Freely Available from IEEE
  • Token-ring local-area networks and their performance

    Publication Year: 1989 , Page(s): 238 - 256
    Cited by:  Papers (23)  |  Patents (30)
    Save to Project icon | Request Permissions | Click to expandAbstract | PDF file iconPDF (1612 KB)  

    The major technical concepts underlying token-ring technology are examined, and performance issues arising in the design of such local-area networks (LANs) are detailed. Following a survey of analytical queuing models to describe the basic token-ring operation, three topics are discussed in detail: (1) the IEEE 802.5 token ring and its performance; (2) the ANSI fiber distributed data interface (FD... View full abstract»

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  • A tutorial on hidden Markov models and selected applications in speech recognition

    Publication Year: 1989 , Page(s): 257 - 286
    Cited by:  Papers (3634)  |  Patents (350)
    Save to Project icon | Request Permissions | Click to expandAbstract | PDF file iconPDF (2272 KB)  

    This tutorial provides an overview of the basic theory of hidden Markov models (HMMs) as originated by L.E. Baum and T. Petrie (1966) and gives practical details on methods of implementation of the theory along with a description of selected applications of the theory to distinct problems in speech recognition. Results from a number of original sources are combined to provide a single source of ac... View full abstract»

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  • Magnetotelluric exploration for hydrocarbons

    Publication Year: 1989 , Page(s): 287 - 317
    Cited by:  Papers (4)  |  Patents (3)
    Save to Project icon | Request Permissions | Click to expandAbstract | PDF file iconPDF (1980 KB)  

    The magnetotelluric (MT) method utilizes naturally occurring low-frequency electromagnetic energy to determine the electrical resistivity of the Earth's subsurface. The resistivity distribution of the subsurface is then interpreted in terms of rock type and geologic structure. MT-derived resistivity data are usually integrated with other geophysical results, and with surface and subsurface geologi... View full abstract»

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  • Three-dimensional magnetotelluric modelling and inversion

    Publication Year: 1989 , Page(s): 318 - 333
    Cited by:  Papers (3)  |  Patents (2)
    Save to Project icon | Request Permissions | Click to expandAbstract | PDF file iconPDF (1324 KB)  

    An outline is presented of the nature of the problem of making quantitative use of magnetotelluric data for geophysical exploration. The authors discuss their view and experiences in dealing with the modeling and interpretation problems. The key step is considered to be the modeling step, which is that of predicting the response of a given distribution of electrical properties within the Earth to ... View full abstract»

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North Carolina State University