WorldCat Identities


Works: 683 works in 812 publications in 1 language and 950 library holdings
Roles: Editor
Classifications: DS480.85,
Publication Timeline
Novel microwave filter design techniques : Fifth quarterly progress report by G. L Matthaei( Book )

12 editions published between 1963 and 1966 in English and held by 12 WorldCat member libraries worldwide

A trial bandstop filter in stripline form was designed with the aid of the elliptic-function bandstop filter design tables published in Quarterly Progress Report 2. The tests results were found to be in good agreement with the theory. A magnetically tunable UHF bandpass filter designed in strip transmission line and with two disk-shaped resonators of yttrium-iron-garnet (YIG) is described. Single crystals of both pure YIG and gallium-substituted YIG were used. Re-entrant directional couplers with direct-coupled center conductors are often easier to realize than similar re-entrant couplers that have no direct coupling between center conductors. New design equations for the former type are presented. (Author)
On meteorological objective analysis and model theory( )

2 editions published in 1960 in English and held by 11 WorldCat member libraries worldwide

Graphical data processing research study and experimental investigation by Richard O Duda( Book )

10 editions published between 1962 and 1968 in English and held by 10 WorldCat member libraries worldwide

This report describes the continuing development of scanning, preprocessing, character-classification, and context-analysis techniques for hand-printed text, such as computer coding sheets in the FORTRAN language. Both edge-detection and topological preprocessing are coupled with classification by a learning machine and used to process a large file of characters printed by a single author. The two systems are combined to achieve a recognition rate considerably better than our previous results

8 editions published between 1964 and 1976 in English and held by 8 WorldCat member libraries worldwide

The donor-attenuator system used in the shock sensitivity measurements was calibrated in the region, 70-150 kbars. The effect of the continuous wire upon apparent sensitivity was studied: whereas the sensitivity of 1,2-DP appears to be independent of wire length, that of nitromethane is not. A method is suggested and used for avoiding this difficulty. The sensitivity of 1,2-DP is independent of diameter for diameters more than twice the failure diameter. Revised sensitivity values are reported. These are based on the new calibration and are for samples of large diameter tested to minimize the effect of the sensor. The uncertainty reflects imprecision in the attenuator calibration, not in the raw test results. Low velocity waves of approximately 1.8 mm/microsecond have been produced in 90% nitromethane -10% tetranitromethane mixtures. Transit time measurements have been made on 1,2DP contained in smooth-bore holes in lead blocks. (Author)
Response of a burning propellant surface to erosive transients by E. L Capener( Book )

6 editions published between 1966 and 1967 in English and held by 6 WorldCat member libraries worldwide

The transient combustion analysis developed under this program is compared with other treatments. Earlier analyses have failed to predict the observed effect of surface exotherms on combustion instability, whereas the SRI treatment is consistent with the observations. It is shown that this difference arises from the method of treating surface reaction kinetics in the solid propellant combustion model. Also presented are initial experimental observations based on a fiber-optic technique for viewing the burning propellant surface. These observations provide illuminating information concerning the ammonium-perchlorate deflagration at the surface and give a clear indication of the flame-zone thickness. (Author)
Tungsten and rocket motors : progress report no. 12 for the period August 1 to November 20, 1960 by Oliver Preston( )

6 editions published between 1961 and 1963 in English and held by 6 WorldCat member libraries worldwide

The study of tungsten in solid propellant rocket motors involves 2 areas of work; the erosion behavior of W under exhaust conditions; and the thermal shock characteristics of W under nozzle heat-up conditions. The plasma jet apparatus was used to determine whether CO2 would erode W at temperatures near the melting point of W. Appreciable erosion occurred and the W weight loss was about 300 to 400 mg compared with a negligible weight loss for the Al2O3 runs reported earlier (AD-266 664). The preliminary runs suggest that mechanical erosion in itself is not likely to be significant and that some chemical reaction with W will probably be required for significant erosion to occur. Work progressed on strain measurement instrumentation for determining (as a function of time) the outside surface strain on the W ring thermal shock specimens. Both electrical and mechanical strain gages are being investigated
Application of intelligent automata to reconnaissance by Stanford Research Institute( Book )

6 editions published between 1967 and 1969 in English and held by 6 WorldCat member libraries worldwide

This report describes the results of research during the first eight months on the project Application of Intelligent Automata to Reconnaissance. The primary goal of this project is to investigate techniques in artificial intelligence applied to the control of a mobile automation in a realistic environment. The main emphasis is in the design of a hierarchy of computer programs that will accept visual and other sensory information from the automation and direct its actions toward the completion of missions requiring the abilities to plan ahead and to learn from previous experience. The automation itself is a four-wheeled, self-powered vehicle with two simple arms for grasping objects. It will carry a television camera, an optical range-measuring device, tactile sensors, a transceiver, and storage and routing logic. The vehicle will be radio-controlled by an SDS 940 time-shared computer. The computer, with the aid of special image-processing hardware, will analyze television pictures transmitted from the vehicle and will calculate a sequence of vehicle actions designed to accomplish the task(s) given to the automation. Calculation of the appropriate action sequence will be performed by problem-solving computer programs which will use internally-stored models of the world generated and abstracted during the course of automation explorations
Research-engineering and support for tropical communications( Book )

6 editions published between 1963 and 1970 in English and held by 6 WorldCat member libraries worldwide

The purpose of the project is to support the MRDC in the areas of tactical and tropical communication. The specific objectives of this effort are to: (1) survey, analyze, and evaluate the capacity, reliability, and physical and tactical limitations of existing communication facilities, equipments, and techniques, (2) generate from the above survey, analysis, and evaluation a set of requirements for field communications based upon tactical considerations and specific equipment characteristics that will satisfy these requirements, (3) test off-the-shelf equipments that come as close as possible to satisfying each set of the above requirements, these tests to be first technical and then tactical for items that show promise, (4) analyze and evaluate the tests and recommend areas for future emphasis, (5) state equipment requirements to accomplish the task of jungle field communication, based upon existing and anticipated tactical requirements, (6) train the Thai personnel assigned to the Electronics Laboratory so that they are able to utilize the facility, accomplishing this training as a natural course of operating the laboratory, (7) aid electronic projects in Thailand as practical, encouraging projects that appear especially useful to the basic objectives of the MRDC; and (8) field test selected items of communications equipment in Thailand in accordance with the requirements of the President's Counter Insurgency Committee. (Author)
Boundary conditions of the sino-indian conflict( Book )

1 edition published in 1963 in English and held by 5 WorldCat member libraries worldwide

The Sino-IKNDIAN BORDER CRISIS HAS IMMEDIATE IMPLICATIONS FOR U.S. policy because this country is committed to the defense of free India. It also has long-range implications for possible and likely actions by Communist China on many fronts. This paper makes a tentative assessment of the political and strategic motivations on both sides of the border and of the conomic capabilities of both protagonists. It is found that, in the short run, China is probably undertaking a dheap and very limited adventure in border rectification, but the action may fit a long-range pattern of much broader implications for Chinese expansionism and aggressive diplomacy, vis-a-vis the Soviet Union as well as the West. On the Indian side, it is found that, while military preparation has been devastatingly inadequate, longer-range potentials are very considerable, if they can be mobilized. (Author)
Study of the Basic Kinetics of Decomposition of MMH and MHF and the Effects of Impurities on Their Stability by David S Ross( Book )

5 editions published between 1970 and 1971 in English and held by 5 WorldCat member libraries worldwide

The very low pressure pyrolysis of uns-dimethylhydrazine (UDMH) was reinvestigated. The condensed phase decomposition task focused upon the reactions of 0.1 M MMH at 319C in hexadecane. The data show considerable scatter, which we attribute to the pressure of trace amounts of some uncontrollable reaction-promoting material--probably oxygen. In other experiments at the same conditions, ullage increases on the order of a factor of three and surface-to-volume increases on the order of a factor of fifty or higher caused minimal changes in both decomposition rate and product nature. The analytical chemistry task has been terminated with the finding that the level of trace organic impurities is a function of the handling history of the MMH sample. Atmospheric oxygen was responsible for the changes, and methane (<100 ppm), ethane (<50 ppm), and azomethane (<50 ppm) were found to be oxygen-generated; sym-dimethylhydrazine (SDMH) was a possible but unconfirmed impurity. (Author)
Study of effects and control of surface contaminants on electrical materials( Book )

4 editions published between 1958 and 1960 in English and held by 4 WorldCat member libraries worldwide

In previous work it was shown in laboratory experiments that transfer of base metal (iron) to a contact surface could occur under conditions not unlike those used in manufacturing and attaching contacts. In time, air oxidation occurred, resulting in conversion of the base metal to the oxide, with a concurrent increase in contact resistance. Contamination of this kind may be detected by the probe method, which consists of a measurement of the resistance between the metal contact and a 2-mil platinum wire, which is used as the probe. Organic contamination was demonstrated in sealed tube experiments. Accomplishments during the present report period include investigation of base metal contact contamination in commercial sealed relays; organic contamination; defective relays from Picatinny Arsenal; whisker growth on connector contacts; and contact resistance of miniature reed switches. (Author, modified-PL)

4 editions published between 1961 and 1962 in English and held by 4 WorldCat member libraries worldwide

A special, sealed cell was constructed for the determination of the Seebeck coefficient of cuprous sulfide under 1 atm S pressure from 1170 to 1020 C. Cuprous sulfide with excess Cu had much lower thermal electromotive force than either cuprous sulfide or Cu2S under 1 atm pressure of S vapor. Examination of the test cell after cooling to room temperature indicated that the method was not suitable for resistivity measurement. Preliminary experiments were made on the mutual solubility of cuprous chloridecuprous sulfide system. A solubility of 14 mol-% cuprous sulfide in molten cuprous chloride was found at 400 C
Relationship between decomposition kinetics and sensitivity( Book )

4 editions published between 1963 and 1964 in English and held by 4 WorldCat member libraries worldwide

Streak camera studies were made of shock propagation of 1,2-bis(difluoroamino)propane(1,2-DP), 2,2-bis(difluoroamino)propane(2,2-DP), and 1,2bis(difluoroamino)-2-methyl propane(IBA). The failure diameter of 1,2-DP in glass is less than 25 mm and greater than 10 mm; the stable detonation velocity is about 6.0 mm/microsecond). Failure diameter limits for 2,2-DP have been established in glass as <25> 13, and the stable detonation velocity is 6.0 mm/microseconds. No conclusions can be drawn as to the failure diameter or detonation velocity of IBA. Fluctuating shock velocities were observed in each of the three compounds. The continuous wire technique was proven reliable with detonating liquids by firing nitromethane and n-propyl nitrate. (Author)

4 editions published between 1968 and 1969 in English and held by 4 WorldCat member libraries worldwide

The purpose of this program is to investigate the feasibility of fabricating thin-wafer channel multiplier arrays by a novel approach and to produce experimental operational models thereof suitable for evaluating the performance characteristics and potential capabilities of such devices. The approach involves using advanced thin-film technology to prepare a base film with a dense array of submicron-size holes, followed by deposition of dynode material on the base to form the individual channel walls. A conductive film on each channel wafer face will permit application of the requisite operational potential. The dense wafers are to be constructed entirely of refractory materials in a vacuum environment and, therefore, should not be a source of contamination of their working environment when in use. Thus, when such an array is interposed between a photo-emitter and a phosphor screen it should provide a relatively stable, high-resolution, amplified electron-image for direct viewing or other image conversion functions. (Author)

4 editions published between 1966 and 1968 in English and held by 4 WorldCat member libraries worldwide

The two subjects discussed in this report are: (1) tunable upconverter design and (2) the coupling for partially decoupled round rods between parallel ground planes. The latter data should be useful for reducing the size of UHF and microwave components using pairs or arrays of coupled transmission lines. The up-converter section develops design curves for maximum gain over a prescribed tuning range. The curves allow the designer an arbitrary choice of frequencies, and account for the major diode package parasitics. (Author)
High-information-density storage surfaces( Book )

4 editions published between 1965 and 1967 in English and held by 4 WorldCat member libraries worldwide

This report discusses contrast measurements taken with an unbakeable field-emitter scanning electron microscope on targets consisting of metal-dielectric-metal film sandwiches on substrates, with small holes through the first two layers. Synchronous lock-in amplification is shown to override stray electron noise, permitting the detection of target holes. Variations of secondary electron contrast with sandwich potential and electron multiplier bias are presented. Effects of electron polymerization contamination, ambient ac magnetic fields, and stray electron noise on the performance of this instrument are described. The conversion of a small, relatively inexpensive commercial electron microscope into an electron probe, for use in producing regular arrays of storage elements, is described, and the first results on resist exposure and development are presented. Related work on molybdenum etching with mixtures of O2 and HC1, and on bombardment-induced-conductivity measurements are discussed briefly. (Author)
Riometer records of 18- and 30-mc cosmic noise( Book )

4 editions published between 1965 and 1966 in English and held by 4 WorldCat member libraries worldwide

Riometer record reproductions of 18-Mc and 30-Mc cosmic noise are presented. The riometer and the field site are described briefly, and the use of the data is explained. (Author)

4 editions published between 1964 and 1966 in English and held by 4 WorldCat member libraries worldwide

Ionospheric observations were carried out at the Laboratory of the Military Research and Development Center at Bangkok, Thailand, a joint United-States-Thailand organization. A Model C-2 vertical-incidence sounder supplied and operated by the United States Army Radio Propagation Agency was installed
Objective and dynamical studies of tropical weather phenomena by R. M Endlich( )

3 editions published between 1962 and 1963 in English and held by 3 WorldCat member libraries worldwide

The special difficulties of weather analysis in the tropics are reviewed. The bulk of the report describes investigations and tests of objective (computer) techniques that are applicable to tropical usage. The advantages of analysing layer-averaged winds, temperatures, heights, and humidity are described. Layer-averaged winds are utilized in the computation of a stream function. The mathematical basis of the ''direct method'' of stream function computation is given and the computer procedure is outlined. The results are compared with independent subjective analyses and show excellent agreement
Speech Understanding Research. Annual Technical Report by Donald E Walker( Book )

3 editions published in 1975 in English and held by 3 WorldCat member libraries worldwide

This report is the third in a series of annual reports describing the research performed by Stanford Research Institute to provide the technology that will allow speech understanding systems to be designed and implemented for a variety of different task domains and environmental constraints. The current work is being carried out cooperatively with the System Development Corporation, which is responsible for signal processing, acoustics, phonetics, and phonology. Following an Introduction and Overview, separate sections describe in detail the Definition System, the Parsing System, the Language Definition, Semantics, and Discourse Analysis and Pragmatics. Appendix a contains a listing of the language currently defined in the speech understanding system. Appendix b lists the reports and publications issued by the project staff. (Author)
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