摘要 :
Hybrid LES/subscale modeling approaches have an important advantage over the current noise prediction methods in that they only involve modeling of the relatively universal subscale motion and not the configuration dependent large...
展开
Hybrid LES/subscale modeling approaches have an important advantage over the current noise prediction methods in that they only involve modeling of the relatively universal subscale motion and not the configuration dependent larger scale turbulence . Previous hybrid approaches use approximate statistical techniques or extrapolation methods to obtain the requisite information about the sub-filter scale motion. An alternative approach would be to adopt the modeling techniques used in the current noise prediction methods and determine the unknown stresses from experimental data. The present paper derives an equation for predicting the sub scale sound from information that can be obtained with currently available experimental procedures. The resulting prediction method would then be intermediate between the current noise prediction codes and previously proposed hybrid techniques.
收起
摘要 :
Hybrid LES/subscale modeling approaches have an important advantage over the current noise prediction methods in that they only involve modeling of the relatively universal subscale motion and not the configuration dependent large...
展开
Hybrid LES/subscale modeling approaches have an important advantage over the current noise prediction methods in that they only involve modeling of the relatively universal subscale motion and not the configuration dependent larger scale turbulence. Previous hybrid approaches use approximate statistical techniques or extrapolation methods to obtain the requisite information about the sub-filter scale motion. An alternative approach would be to adopt the modeling techniques used in the current noise prediction methods and determine the unknown stresses from experimental data. The present paper derives an equation for predicting the sub scale sound from information that can be obtained with currently available experimental procedures. The resulting prediction method would then be intermediate between the current noise prediction codes and previously proposed hybrid techniques.
收起
摘要 :
We have two major goals. The first is to improve our capabilities and scientific knowledge concerning Lagrangian predictability in the ocean. Specific applications include search and rescue operations, the design of float and drif...
展开
We have two major goals. The first is to improve our capabilities and scientific knowledge concerning Lagrangian predictability in the ocean. Specific applications include search and rescue operations, the design of float and drifter experiments, and the understanding of stirring mechanisms. The second goal is to develop methods allowing the assessment of the underlying dynamics and predictability of complex physical systems in the ocean based solely on the analysis of time-series.
收起
摘要 :
This report reviews previous contributions to the literature in the area of prediction of dangerous and homicidal behavior. A differentiation between aggressive or assaultive behavior and truly homicidal behavior is made. It is po...
展开
This report reviews previous contributions to the literature in the area of prediction of dangerous and homicidal behavior. A differentiation between aggressive or assaultive behavior and truly homicidal behavior is made. It is postulated that those capable of aggressive behavior are not all capable of homicidal behavior. A psychological developmental defect, the incapacity to invest others with human values, is outlined. This defect, pathological dehumanization, is necessary for the completion of a homicidal act. Illustrative case histories of homicidal individuals are presented. Case histories are also presented of individuals predicted by the authors to be homicidal before the acts were committed. Guidelines for clinical prediction of murderous behavior are presented. Practical and legal problems involved in the early identification and treatment of potentially homicidal individuals are discussed. Adolescents, Homicide prediction, Violence prediction.
收起
摘要 :
A plan for conducting a comprehensive evaluation of the accuracy and utility -- with respect to operational Navy applications -- of a medium range (5-10 day) atmospheric forecast system is presented. Detailed evaluation procedures...
展开
A plan for conducting a comprehensive evaluation of the accuracy and utility -- with respect to operational Navy applications -- of a medium range (5-10 day) atmospheric forecast system is presented. Detailed evaluation procedures for verification data collection and reduction for practical skill assessment are provided. Keywords: Extended range numerical prediction; Numerical weather prediction.
收起
摘要 :
A method is developed for the prediction of the probability of missile impact upon a given structure or object and the maximum missile range from a cratering event. The data are from missile areal distribution studies made after s...
展开
A method is developed for the prediction of the probability of missile impact upon a given structure or object and the maximum missile range from a cratering event. The data are from missile areal distribution studies made after several high explosive cratering events. Several empirical and theoretical scaling techniques are used to combine the missile areal distribution data into a form that allows the prediction of missile impact probability and maximum missile ranges as a function of charge yield,media,and depth of burial. This method of prediction is of direct interest in determining missile damage from typical explosive cratering events. (Author)
收起
摘要 :
The long-term goal is to improve numerical (computer -aided) weather prediction in coastal regions, especially of weather events that impact naval operations.
摘要 :
The research was made to improve the methodology of forecasting population growth and economic activity required for the development of a balanced program of highway needs. This goal was accomplished through an evaluation of the r...
展开
The research was made to improve the methodology of forecasting population growth and economic activity required for the development of a balanced program of highway needs. This goal was accomplished through an evaluation of the results of methods already in use. Improved forecasting techniques were recommended, and a manual on forecasting methodology was prepared. The report is intended to serve as a guide to those who find it necessary to forecast the demand for highways. Chapter 1, the introduction, deals in general with such matters as economics and the allocation of resources, forecasting methods, and analysis of forecasts. Chapter 2 is a case-study analysis of national, State, and local area forecasts of population. Next comes a similar analysis of national, State, and local forecasts of motor vehicle registrations. Traffic and travel forecasts are similarly dealt with in Chapter 4. Chapter 5 discusses two aspects of the problems mentioned in the preceding analysis. The first discussed is the problem of accuracy, while the second is the relationship of governmental organization and cooperation to future forecasting activities. (Author)
收起
