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Articles 13561 - 13590 of 13649
Full-Text Articles in Entire DC Network
Recent Engineering Extension Publications, Purdue Road School
Recent Engineering Extension Publications, Purdue Road School
Purdue Road School
No abstract provided.
The Highway Extension And Research Project For Indiana Counties, J. F. Mclaughlin, D. G. Shurig
The Highway Extension And Research Project For Indiana Counties, J. F. Mclaughlin, D. G. Shurig
Purdue Road School
No abstract provided.
County Transportation Planning Present And Future, Paul T. Vermillion
County Transportation Planning Present And Future, Paul T. Vermillion
Purdue Road School
No abstract provided.
The Three C'S Of Urban Transportation Planning, Edward G. Wetzel
The Three C'S Of Urban Transportation Planning, Edward G. Wetzel
Purdue Road School
No abstract provided.
Application Of Statistical Quality Control Procedures To Production Of Highway Pavement Concrete : Progress Report, Steven John Hanna, A. P. Lott
Application Of Statistical Quality Control Procedures To Production Of Highway Pavement Concrete : Progress Report, Steven John Hanna, A. P. Lott
JTRP Technical Reports
No abstract provided.
Aluminum Pipe Culverts, R. H. Brown
Meeting The Challenges To State Highway Departments, Roy E. Jorgensen
Meeting The Challenges To State Highway Departments, Roy E. Jorgensen
Purdue Road School
No abstract provided.
The Future Role Of Traffic Engineering, Fred W. Hurd
The Future Role Of Traffic Engineering, Fred W. Hurd
Purdue Road School
No abstract provided.
Systematic Cleaning And Maintenance Of Streets, Robert D. Bugher
Systematic Cleaning And Maintenance Of Streets, Robert D. Bugher
Purdue Road School
No abstract provided.
Can Highway Accidents Be Reduced?, Charles W. Prisk
Can Highway Accidents Be Reduced?, Charles W. Prisk
Purdue Road School
No abstract provided.
Quo Vadis Traffic Engineering, J. Al. Head
Congress Street Expressway Surveillance Project, A. D. May Jr.
Congress Street Expressway Surveillance Project, A. D. May Jr.
Purdue Road School
No abstract provided.
Estimation Of Time-Varying Correlation Functions, G. R. Cooper, Helmut Berndt
Estimation Of Time-Varying Correlation Functions, G. R. Cooper, Helmut Berndt
Department of Electrical and Computer Engineering Technical Reports
The need for estimating the auto- or crosscorrelation functions of nonstationary random processes frequently arises in communication and self-adaptive systems. In most situations only one sample function can he observed over finite time. It is the purpose of this work to establish a firm theoretical basis for such a measurement of time-varying correlation functions, and the emphasis here is on suitable estimation procedures rather than specific measurement techniques. Second order stochastic processes are used as a mathematical model. The minimum mean square error between a weighted time average and the true (ensemble average) correlation function is investigated. This procedure leads …
Advanced Communication Theory Techniques Technical Documentary Report No. Asd-Tdr-63-186, J. C. Hancock, D. G. Lainiotis, J. G. Lindenlaub, Marquart R. G., H Schwarzlander
Advanced Communication Theory Techniques Technical Documentary Report No. Asd-Tdr-63-186, J. C. Hancock, D. G. Lainiotis, J. G. Lindenlaub, Marquart R. G., H Schwarzlander
Department of Electrical and Computer Engineering Technical Reports
Under this contract a number of topics have been studied and analyzed in detail in order to bring together and somewhat extend the concepts of communication theory as they apply to some current problems in digital communication systems. Radio wave channels are characterized by a model' which accounts for both multiplicative and additive disturbances, A large amount of experimental data pertaining to radio disturbances is evaluated and correlated. She. importance of the Rayleigh fading channel is emphasized and previous work is extended to determine the capacity and efficiency of the Rayleigh, channel. Detection theory concepts have been extended to treat …
Evaluation Of Asphalt-Aggregate Distribution In Bituminous Mixes By Autoradiography : Technical Paper, Donald R. Lamb, William Harner Goetz, John E. Christian
Evaluation Of Asphalt-Aggregate Distribution In Bituminous Mixes By Autoradiography : Technical Paper, Donald R. Lamb, William Harner Goetz, John E. Christian
JTRP Technical Reports
No abstract provided.
Tobermorite And Tobermorite-Like Calcium Silicate Hydrates: Their Properties And Relationships To Clay Minerals, Sidney Diamond
Tobermorite And Tobermorite-Like Calcium Silicate Hydrates: Their Properties And Relationships To Clay Minerals, Sidney Diamond
JTRP Technical Reports
No abstract provided.
An Application Of Gravity Model Theory Using A Small Sample Of Origin-Destination Data : Informational Report, Bob L. Smith
An Application Of Gravity Model Theory Using A Small Sample Of Origin-Destination Data : Informational Report, Bob L. Smith
JTRP Technical Reports
No abstract provided.
Correlation Receivers Minimizing Intersymbol Interference, J. C. Hancock, J. M. Aein
Correlation Receivers Minimizing Intersymbol Interference, J. C. Hancock, J. M. Aein
Department of Electrical and Computer Engineering Technical Reports
The problem considered here is that of binary pulse communication operating in a white noise environment -wherein interfering signal pulses are generated by any of the following causes t (1) A signaling rate larger than channel bandwidths, causing pulse spill over into succeeding bands. (2) Go-channel interference or cross talk on carrier systems. (3) Signal echoes or reflections due to antenna location or mismatch of high frequency components. The optimum correlation receiver is found to be a linear combination of the desired signal pulse plus the interfering pulse. In severe cases significant improvement can be had over a correlation receiver …
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 …
Binary Communication Systems Using Wideband Signals (Final Report V.Ii), J. C. Hancock, W. D. Wade
Binary Communication Systems Using Wideband Signals (Final Report V.Ii), J. C. Hancock, W. D. Wade
Department of Electrical and Computer Engineering Technical Reports
It has been pointed out that communication systems having wideband signal waveforms have certain advantages over the conventional narrowband systems. This report describes the results of a research program which examined in detail the information efficiency of wideband systems. The results presented in this report fall into three major categories: (1) analysis of systems utilizing linear receivers (i.e. synchronous receivers , etc.), (2) analysis of system utilizing non-linear receivers, and (3) analysis and description of methods which can be used for realizing certain optimum and sub-optimum wideband receivers. The development of these topics is based on the geometrical concept of …
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 …
State-County Cooperative Agreements On Highway Problems: Background And Approach, Nelson G. Grills
State-County Cooperative Agreements On Highway Problems: Background And Approach, Nelson G. Grills
Purdue Road School
No abstract provided.
Quality Control At All Levels Of Road Construction, Warren B. Warden
Quality Control At All Levels Of Road Construction, Warren B. Warden
Purdue Road School
No abstract provided.
Review Of Accomplishments For 1961 And Preview Of Program For 1962, George M. Foster
Review Of Accomplishments For 1961 And Preview Of Program For 1962, George M. Foster
Purdue Road School
No abstract provided.
The Simulation Of Traffic Flow To Obtain Volume Warrants For Intersection Control, Russell Maclean Lewis
The Simulation Of Traffic Flow To Obtain Volume Warrants For Intersection Control, Russell Maclean Lewis
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 …
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.
The City Engineer As Traffic Engineer, A. D. Ruth
The City Engineer As Traffic Engineer, A. D. Ruth
Purdue Road School
No abstract provided.