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Articles 11761 - 11790 of 12096
Full-Text Articles in Entire DC Network
Information Efficiency Of Binary Communication Systems (Final Report V.I), J. C. Hancock, E. M. Sheppard
Information Efficiency Of Binary Communication Systems (Final Report V.I), J. C. Hancock, E. M. Sheppard
Department of Electrical and Computer Engineering Technical Reports
Most of the work which has been done with binary communication systems up until now has assumed operation in a symmetric mode. This work is concerned with the problem of evaluating various combinations of modulation and detection in both symmetric and non-symmetric modes of operation. The most frequently used criterion for describing performance in a binary system is total probability of error, A discussion of this and other criteria such as realizable rate and minimum energy per bit factors is given. A new criterion called information efficiency is defined which is based on realizable information rate on a per symbol …
A Wideband Adaptive Communication System, J. C. Hancock, W. C. Lindsey
A Wideband Adaptive Communication System, J. C. Hancock, W. C. Lindsey
Department of Electrical and Computer Engineering Technical Reports
The concept of an open loop Adaptive Communication link is established as one which is capable of monitoring the medium through which it must perform while simultaneously transmitting information and continuously adjusting its modes of operation so as to optimize its performance with respect to a performance criterion chosen a priori. Statistical methods are applied to the adaptive communication problem. Communicating through a random multipath channel with additive noise is considered. The transmitter is specified as one which transmits one of two possible noise-like waveforms which are assumed to be known at the receiver. At any time, it is postulated …
The Variable Gradient Method Of Generating Liapunov Functions With Application To Automatic Control Systems, John E. Gibson, D. G. Schultz
The Variable Gradient Method Of Generating Liapunov Functions With Application To Automatic Control Systems, John E. Gibson, D. G. Schultz
Department of Electrical and Computer Engineering Technical Reports
The contribution of this thesis is the introduction and development of the variable gradient method of generating Liapunov functions. A Liapunov function, V, is considered to be generated if the form of V is not known before the generating procedure is applied. Two previous attempts at the generation of Liapunov functions to prove global asymptotic stability for nonlinear autonomous systems have been made. These attempts are summarized and evaluated in some detail, as they form the basis for the variable gradient approach proposed in this thesis. It is assumed that the system whose stability is being investigated is represented by …
Suggested Requirements For Purchase Of Motor Graders By County Highway Departments, David A. Pasch
Suggested Requirements For Purchase Of Motor Graders By County Highway Departments, David A. Pasch
Purdue Road School
No abstract provided.
Is Traffic Engineering Worth The Money?, Gordon Gravelle
Is Traffic Engineering Worth The Money?, Gordon Gravelle
Purdue Road School
No abstract provided.
An Analysis Of Traffic Accidents On County Roads, D F. Petty, H L. Michael
An Analysis Of Traffic Accidents On County Roads, D F. Petty, H L. Michael
Purdue Road School
No abstract provided.
Organization For Traffic Control On County Highways, George L. Reyman
Organization For Traffic Control On County Highways, George L. Reyman
Purdue Road School
No abstract provided.
A Sufficiency Rating Method For Urban Intersections, W W. Schenler, H L. Michael
A Sufficiency Rating Method For Urban Intersections, W W. Schenler, H L. Michael
Purdue Road School
No abstract provided.
Serviceability Ratings Of Highway Pavements : Technical Paper, Velma Fumiko Nakamura, Harold L. Michael
Serviceability Ratings Of Highway Pavements : Technical Paper, Velma Fumiko Nakamura, Harold L. Michael
JTRP Technical Reports
No abstract provided.
A Laboratory Study Of The Degradation Of Aggregates In Bituminous Mixes, Fred Moavenzadeh
A Laboratory Study Of The Degradation Of Aggregates In Bituminous Mixes, Fred Moavenzadeh
JTRP Technical Reports
No abstract provided.
Recent Developments In Aggregate Research, John Francis Mclaughlin
Recent Developments In Aggregate Research, John Francis Mclaughlin
JTRP Technical Reports
No abstract provided.
Measurement Of Moisture Gradients In Concrete Pavement Slabs : Progress Report No. 4, J. Richard Bell
Measurement Of Moisture Gradients In Concrete Pavement Slabs : Progress Report No. 4, J. Richard Bell
JTRP Technical Reports
No abstract provided.
A Sufficiency Rating Method For Urban Intersections : Technical Paper, William Walter Schenler, Harold L. Michael
A Sufficiency Rating Method For Urban Intersections : Technical Paper, William Walter Schenler, Harold L. Michael
JTRP Technical Reports
No abstract provided.
Some Useful Coding Techniques For Binary Communication Systems, J. C. Hancock, J. L. Holsinger
Some Useful Coding Techniques For Binary Communication Systems, J. C. Hancock, J. L. Holsinger
Department of Electrical and Computer Engineering Technical Reports
An introduction to coding theory and a discussion of specific coding techniques are given as applied to digital communication systems. The place of coding in a communication system is illustrated and the various approaches to coding are discussed. The information theory concepts required are presented along with the First and Second Fundamental Theorems of Shannon, The relation between Shannon’s theorems and coding for the noisy and noiseless channel is discussed. For the noiseless channel the techniques of Shannon, Fano, Huffman, Gilbert-More, Karp and others are discussed. For the noisy channel, the techniques of Hamming, Slepian, Elias, Cowell, Bose-Chaudhuri, Reed-Muller, Fire, …
Two Dimensional Signal Representation Using Prolate Spheroidal Functions, G. R. Cooper, D. A. Landgrebe
Two Dimensional Signal Representation Using Prolate Spheroidal Functions, G. R. Cooper, D. A. Landgrebe
Department of Electrical and Computer Engineering Technical Reports
The most widely used methods of signal representation are the time function and the frequency function or spectrum representations. This work is concerned with the development of a representation which is a combination of these two. Two previous attempts at defining this type of signal representation, which is referred to as two dimensional representation, have been made and a summary and evaluation of these attempts is presented. The primary objective of the work reported here was to develop a practical two dimensional representation which has the desired two dimensional conceptual properties as well as mathematical convenience. The representations defined are …
Repeated Load Triaxial Test With Pore Pressure Measurement : Technical Paper, Rodney Wendell Johnson, Eldon J. Yoder
Repeated Load Triaxial Test With Pore Pressure Measurement : Technical Paper, Rodney Wendell Johnson, Eldon J. Yoder
JTRP Technical Reports
No abstract provided.
Distribution Functions For Outputs Of Certain Linear Filters For Random Square-Wave Inputs, J. A. Mcfadden, A. R. Cohen,
Distribution Functions For Outputs Of Certain Linear Filters For Random Square-Wave Inputs, J. A. Mcfadden, A. R. Cohen,
Department of Electrical and Computer Engineering Technical Reports
This report considers the problem of the calculation of the distribution function of the output of a linear filter with a random square—wave input. The systems considered are the finite-time integrator, the RC low- pass filter, and certain restricted higher-order filters. The inputs are square-waves in which the lengths of axis-crossing intervals are random, but statistically independent. For the finite-time integrator with a coin-toss square-wave input, a difference equation for the characteristic function of the output is derived and solved. The continuity and differentiability properties of the distribution function of the output of an RC low—pass filter are discussed. Under …
Sizes And Grading Of Aggregates For Road Maintenance And Construction, W. A. Sutton
Sizes And Grading Of Aggregates For Road Maintenance And Construction, W. A. Sutton
Purdue Road School
No abstract provided.
Subdivision Controls And The Law, Daniel R. Mandelker
Subdivision Controls And The Law, Daniel R. Mandelker
Purdue Road School
No abstract provided.
Some Concepts On The Use Of Deflection Measurements For Evaluating Flexible Pavements, Richard D. Walker, Eldon J. Yoder
Some Concepts On The Use Of Deflection Measurements For Evaluating Flexible Pavements, Richard D. Walker, Eldon J. Yoder
Purdue Road School
No abstract provided.
Accomplishments And Objectives Of The Indiana State Highway Department, George M. Foster
Accomplishments And Objectives Of The Indiana State Highway Department, George M. Foster
Purdue Road School
No abstract provided.
Use Of Acceleration-Deceleration Lanes, Neddy C. Jouzy, Harold L. Michael
Use Of Acceleration-Deceleration Lanes, Neddy C. Jouzy, Harold L. Michael
Purdue Road School
No abstract provided.
A Method Of Evaluating Grading On Concrete Aggregates, Sandor Popovics
A Method Of Evaluating Grading On Concrete Aggregates, Sandor Popovics
JTRP Technical Reports
No abstract provided.
A Study Of The Effects Of Aggregate Factors On Pavement Friction, Jack E. Stephens, William Harner Goetz
A Study Of The Effects Of Aggregate Factors On Pavement Friction, Jack E. Stephens, William Harner Goetz
JTRP Technical Reports
No abstract provided.
Jhrp-Ishd Cooperative Study Using Kneading Compactor And Hveem Stabilometer, Noel G. Gaudette, William Harner Goetz
Jhrp-Ishd Cooperative Study Using Kneading Compactor And Hveem Stabilometer, Noel G. Gaudette, William Harner Goetz
JTRP Technical Reports
No abstract provided.
Use Of Acceleration-Deceleration Lanes : Technical Paper, Neddy Costandy Jouzy, Harold L. Michael
Use Of Acceleration-Deceleration Lanes : Technical Paper, Neddy Costandy Jouzy, Harold L. Michael
JTRP Technical Reports
No abstract provided.
An Analysis Of Traffic Accidents On County Roads : Informational Report, Donald F. Petty
An Analysis Of Traffic Accidents On County Roads : Informational Report, Donald F. Petty
JTRP Technical Reports
No abstract provided.
Study Of Runoff From Small Watersheds For Highway Drainage Design In Indiana : Progress Report No. 1, I-Pai Wu, J. W. Delleur
Study Of Runoff From Small Watersheds For Highway Drainage Design In Indiana : Progress Report No. 1, I-Pai Wu, J. W. Delleur
JTRP Technical Reports
No abstract provided.
Microwave Energy Conversion, E. M. Sabbagh
Microwave Energy Conversion, E. M. Sabbagh
Department of Electrical and Computer Engineering Technical Reports
Plasma Diode. Operating conditions for the microwave absorber are set forth. A tapered coaxial load is proposed in which the outside of the load is also the cathode of the plasma diode which should operate at temperatures of 2000 - 2500° K, The load and cathode temperature must be raised from about 300°K to operating temperature by microwave power. A test set up is proposed for making the necessary measurements of conductivity, thermal and mechanical properties of the more promising absorber-cathode materials. Some of the test equipment is not yet available but tests at room temperature on conductivity at microwave …
Statistical Analysis Of Soil Variability, Delon Hampton
Statistical Analysis Of Soil Variability, Delon Hampton
JTRP Technical Reports
No abstract provided.