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Statistical Analysis of the Frequency and Severity of Accidents to Potential Highway Carriers of Highly Radioactive Materials

Description: "The probability of accidents to tractor semitrailers is developed through analysis of accident frequency data in relation to season; geographical factors; road type, traffic, and population density; and type of carrier business. Maximum likelihood rates are developed for the potential carriers of radioactivity. Impact characteristics of accidents are studied through the analysis of mass, speed, and energy relations, and the effect of these on vehicle and cargo damages is explored."
Date: unknown
Creator: Karson, M. J. & Thompson, J. T.
Item Type: Refine your search to only Report
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Statistical analysis of the time and fatigue strength of aircraft wing structures

Description: The results from stress measurements in flight operation afford data for analyzing the frequency of appearance of certain parts of the static breaking strength during a specified number of operating hours. Appropriate frequency evaluations furnish data for the prediction of the required strength under repeated stress in the wing structures of aircraft of the different stress categories for the specified number of operating hours demanded during the life of a component.
Date: October 1941
Creator: Kaul, Hans W.
Item Type: Refine your search to only Report
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Statistical Approach to the Estimation of Loads and Pressures on Seaplane Hulls for Routine Operations

Description: Memorandum presenting a study of the impact loads experienced during full-scale and model tests in order to estimate the repeated loadings of seaplanes for long operating periods. The results indicate that the low landing speeds for antisubmarine-warafare seaplanes reduced the magnitude of the loads but that the more frequent landings and take-offs required for these operations greatly increased the total number of loads.
Date: March 27, 1957
Creator: Steiner, Roy
Item Type: Refine your search to only Report
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A Statistical Characterization of Electroexplosive Devices Relevant to Electromagnetic Compatibility Assessment

Description: Abstract: Electroexplosive devices (EEDs) are electrically fired explosive initiators used in a wide variety of applications. The nature of most of these applications requires that the devices function with near certainty when required and remain inactive otherwise. Recent concern with pulsed electromagnetic interference (EMI) and nuclear electromagnetic pulse (EMP) made apparent the lack of methodology for assessing EED vulnerability. A new and rigorous approach for characterizing EED firing l… more
Date: May 1986
Creator: Friday, Dennis S. & Adams, John W.
Item Type: Refine your search to only Report
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Statistical Evaluation of Methods for the Analysis of Dibasic Aluminum Nitrate (DIBAN)

Description: The indicated methods for determining the following constituents of Diban, which is an aqueous solution of dibasic aluminum nitrate, Al(OH)2NO3, were evaluated statistically: 1aluminum by gravimetric, volumetric, and spectrophotometric procedures, 2. basicity (hydroxyl value) by formation of an aluminum complex and titration of the free acid with standard alkali solution, 3. total nitrogen by the Kjeldahl method, 4. ammonia by the Kjeldahl method, and 5. nitrates by means of a cation-exchange r… more
Date: September 16, 1955
Creator: Surak, J. G.; Thomason, P. F. & Haaen, H. P.
Item Type: Refine your search to only Report
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Statistical Explanation of Spontaneous Freezing of Water Droplets

Description: Note presenting a theory based on the presence of small crystallization nuclei suspended in water to explain experimental results showing that on the average, small droplets can be supercooled to lower temperatures than large ones. The average behavior of the supercooled droplets is reproduced on the basis of probability theory with an assumed distribution of crystallization nuclei with respect to the temperatures at which the nuclei cause freezing.
Date: December 1950
Creator: Levine, Joseph
Item Type: Refine your search to only Report
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Statistical Explanation of Spontaneous Freezing of Water Droplets

Description: Note presenting a statistical theory based on the presence of small crystallization nuclei suspended in water developed to explain experimental results showing that, on average, small droplets can be supercooled to lower temperatures than large ones. The average behavior of supercooled droplets is reproduced on the basis of probability theory with an assumed distribution of crystallization nuclei with respect to the temperatures at which the nuclei cause freezing.
Date: December 1950
Creator: Levine, Joseph
Item Type: Refine your search to only Report
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Statistical Fluctuation of Intensity in Debye-Scherrer Lines Due to Random Orientation of Crystal Grains

Description: Note presenting an exploration of the Debye-Scherrer diagram of a stationary polycrystalline sample, which has an intensity distribution with an erratic line because of statistical irregularities of the crystal grain orientation. The fluctuations of intensity are discussed for the case that the only causes of line breadth are the natural spectral width of the primary radiation and the finite size of the grains.
Date: August 1951
Creator: Ekstein, Hans
Item Type: Refine your search to only Report
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The Statistical Geometry Of Bubble Tracks

Description: An exact treatment of the structure of tracks in nuclear research emulsion recently was attempted with some success. Many of the proofs also appear to be generally valid for bubble tracks in Wilson chambers. This is a summary of the results that are applicable to tracks of charged particles in bubble chambers.
Date: September 28, 1960
Creator: Barkas, Walter H. (Walter Henry), 1912-1969
Item Type: Refine your search to only Report
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Statistical Guidelines for a Pilot Observer Program to Estimate Turtle Takes in the Hawaii Longline Fishery

Description: Abstract: Statistical guidelines are described for the development of a pilot scientific observer sampling program to collect turtle interactions data from the Hawaii longline fishery. The best available data are presented and potential sources of variability in longline turtle take rates are discussed. A stratified sampling design for a pilot survey is developed based on time and target species. An array of sample size choices for the pilot program is presented covering a range of tolerance le… more
Date: November 1993
Creator: DiNardo, Gerard T.
Item Type: Refine your search to only Report
open access

Statistical Identification of Effective Input Variables

Description: This report provides background and procedural information for the use of a general-purpose Stirling-engine analysis code developed at Argonne National Laboratory and available through the National Energy Software Center. Different engine configurations are easily specified, or the user may make use of provided data for existing engines, both kinematic and free piston. The code models heat transfer and fluid mechanics throughout the engine and accounts for system energy flows and losses. Good a… more
Date: September 1982
Creator: Vaurio, J. K.
Item Type: Refine your search to only Report
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Statistical measurements of contact conditions of 478 transport-airplane landings during routine daytime operations

Description: Statistical measurements of contact conditions have been obtained, by means of a special photographic technique, of 478 landings of present-day transport airplanes made during routine daylight operations in clear air at the Washington National Airport. From the measurements, sinking speeds, rolling velocities, bank angles, and horizontal speeds at the instant before contact have been evaluated and a limited statistical analysis of the results has been made and is reported in this report.
Date: 1955
Creator: Silsby, Norman S.
Item Type: Refine your search to only Report
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Statistical measurements of landing-contact conditions of a heavy bomber

Description: Report presenting statistical measurements of landing-contact conditions for 144 landings of a heavy bomber airplane during routine daytime operations at Carswell Air Force Base. Using measurements obtained by a special photographic method, sinking speeds, bank angles, rolling velocities, and horizontal speeds at the instant before contact were evaluated and analyzed.
Date: June 27, 1955
Creator: Silsby, Norman S. & Harrin, Eziaslav N.
Item Type: Refine your search to only Report
open access

A Statistical Model of Nuclear Level Spacings

Description: A generalization of Wigner's simple model for the distribution of nuclear level spacings is studied. It is based on a stochastic process which reproduces the correct joing probability distribution of N enerfy levels for small spacings. The case N=3, which includes the effect of the correlation between adjacent spacings, is discussed in detail. The resulting distribution and the correlation coefficient are compared with experimental data. No definite conclusion can be drawn except to say that th… more
Date: December 4, 1960
Creator: Dresner, L. & Inönü, E.
Item Type: Refine your search to only Report
open access

Statistical Properties of Spectra

Description: A brief review of the statistical properties of spectra is presented. The purpose of this paper is to present a rapid survey of the statistical properties of spectra using both atomic spectral data and nuclear spectral data. In many cases, only one kind of relevant data exists, for example, very little is known about atomic particle transition probability data so that for that sort of data, we must confine our attention to nuclear data. When there are both atomic and nuclear data available, we … more
Date: 1962
Creator: Porter, C. E.
Item Type: Refine your search to only Report
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Statistical Study of Aircraft Icing Probabilities at the 700- and 500- Millibar Levels over Ocean Areas in the Northern Hemisphere

Description: From Summary: "A statistical study is made of icing data reported from weather reconnaissance aircraft flown by Air Weather Service (USAF). The weather missions studied were flown at fixed flight levels of 500 millibars (18,000 ft) and 700 millibars (10,000 ft) over wide areas of the Pacific, Atlantic, and Arctic Oceans. This report is presented as part of a program conducted by the NACA to obtain extensive icing statistics relevant to aircraft design and operation. The thousands of in-flight o… more
Date: May 1957
Creator: Perkins, Porter J.; Lewis, William & Mulholland, Donald R.
Item Type: Refine your search to only Report
open access

A Statistical Study of EBR-II Fuel Elements Manufactured by the Cold Line at Argonne-West and by Atomics International

Description: Nine elements from each batch of fuel elements manufactured for the EBR-II reactor have been analyzed for uranium-235 content by NDA methods. These values, together with those of the manufacturer, are used to estimate the product variance and the variances of the two measuring methods. These variances are compared with the variances computed from the stipulations of the contract. A method is derived for resolving the several variances into their within-batch and between-batch components. Some o… more
Date: September 1977
Creator: Harkness, A. L.
Item Type: Refine your search to only Report
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