In this paper we study the time-clustering behavior of sequences of car accidents, using data from a freely available database in the internet. The Allan Factor analysis, which is a well-suited method to investigate time-dynamical behaviors in point processes, has revealed that the car accident sequences are characterized by a general time-scaling ...
NASA Astrophysics Data System (ADS)
... Descriptors : (*ACCIDENTS, *WEATHER), (*BEHAVIOR, WEATHER), MOTOR VEHICLE ACCIDENTS, POLICE, CORRELATION TECHNIQUES ...
DTIC Science & Technology
Poisson and negative binomial (NB) models have been used to analyze traffic accident occurrence at intersections for several years. There are however, limitations in the use of such models. The Poisson model requires the variance-to-mean ratio of the accident data to be about 1. Both the Poisson and the NB models require the accident ...
PubMed
... obtained. The spatial temporal correlation of the ocean surface is expressed in terms of this directional wave spectrum. This ...
... Title : A Car-Following Model Relating Reaction Time and Temporal Headways to Accident Frequency. Descriptive Note : Technical rept.,. ...
Finite Rate Feedback for Spatially and Temporally Correlated MISO Channels in the Presence for spatially and temporally correlated Rayleigh fading Multiple Input Single Output (MISO) channels: MISO systems, transmit beamforming, channel quanti- zation, spatial correlation, channel estimation
E-print Network
Automobile accident histories were obtained from a sample of 84 U.S. Marines stationed at Camp Lejeune, North Carolina. The number of accidents in the preceding 12 months yielded a correlation of zero with accidents prior to that 12-month period. It was c...
National Technical Information Service (NTIS)
Investigations were conducted of 337 auto/pedestrian accidents in Los Angeles, California. Each accident was investigated either on-scene or with a designated follow-up methodology. Applicable accidents were selected for investigation using a temporal sam...
... (Author). Descriptors : *MOTOR VEHICLE ACCIDENTS, DRIVERS( PERSONNEL), CORRELATION TECHNIQUES. Subject ...
In order to assess the relationship between suicidal behavior and traffic accidents, we analyzed the seasonal patterns of completed suicides and deaths related to traffic accidents in France over a period of 8 years. We found a clear seasonal rhythm of completed suicides with a peak in May, and an additional peak in September. The traffic ...
Temporal and Spatial Correlation of DSD Parameters to Improve Satellite-based Precipitation Products � Home � Members � edit thumbnail. Resources: N/A ...
NASA Website
... Title : Robust Spectro-Temporal Reverse Correlation for the Auditory ... descriptor of the linear processing of time-varying acoustic spectra by ...
... Accession Number : ADA465497. Title : Is Host-Based Anomaly Detection + Temporal Correlation = Worm Causality. Corporate ...
An increase in breast cancer incidence has been reported in areas of Belarus and Ukraine contaminated by the Chernobyl accident and has become an issue of public concern. The authors carried out an ecological epidemiological study to describe the spatial and temporal trends in breast cancer incidence in the most contaminated regions of Belarus and Ukraine, ...
... of two Wigner distribution functions; and Moyal's theorem. ... Temporal correlation, Wigner distribution, Ambiguity function, Fourier transform ...
... Since the Devonian, the dominant ... of the correlation during this period is emphasized due to ... this window shows correlation between periods of high ...
The temporal amplitude of the modes is significantly correlated with the Po River runoff. The interpolated MODIS data were also correlated with the Po River ...
Quantum correlation between photons, or entanglement, is in the heart of quantum optics. It is this property that enables quantum communications,. 13 ...
Since duration prediction is one of the most important steps in an accident management process, there have been several approaches developed for modeling accident duration. This paper presents a model for the purpose of accident duration prediction based on accurately recorded and large accident dataset from the ...
Road traffic accident data in Nigeria generally lack exact coordinate information. Accident analysis is, therefore, restricted to aggregate data on trends, magnitude and temporal dimensions. This article addresses the road accident problem in Jos between 1995 and 1999 through a road profiling approach. Results show ...
Of Human�Computer Interaction During Accident Investigations 7 problem can be avoided by the introduction to accidents involving interactive systems. Temporal logics can be used to avoid some of the ambiguityThe Formal Analysis Of Human�Computer Interaction During Accident Investigations Chris Johnson
We generalize a wide class of time-continuous microscopic traffic models to include essential aspects of driver behaviour not captured by these models. Specifically, we consider (i) finite reaction times, (ii) estimation errors, (iii) looking several vehicles ahead (spatial anticipation), and (iv) temporal anticipation. The estimation errors are modelled as stochastic Wiener ...
The brown alga Fucus vesiculosus L. has been used as a bioindicator for the investigation of the impact of the Chernobyl accident with respect to the spatial and temporal distribution of radionuclides in the Baltic sea. The investigations were performed i...
A general temperate latitude cyclonic rainstorm model is presented which describes the effects of washout and runoff on consequences of atmospheric releases of radioactive material from potential nuclear reactor accidents. The model treats the temporal an...
An independent Columbia Accident Investigation Board (CAIB) was formed and .... After correlating all analyses, a scenario for the progression of damage in ...
... perspective, correlates the development of expert pilot cognitive processes with training and experience, and reviews accident scenarios which ...
... with movements and activity, increasing mortality from traffic accidents, or ... of probabilistic analyses that ultimately may be used to assess risks ... ...
NBII National Biological Information Infrastructure
... A regression analysis of accidents from previous flight deck operations is employed to find the partial correlation coefficients for each of these factors ...
... Accession Number : ADP006109. Title : Correlation between EEG Abnormal Activity and Aircraft Accidents: A Long Term Observation,. ...
... as economic loss to vehicle damage and increased insurance premiums (Child and Stuart 1987, Child 1998). From ... 2006b. Temporal and spatial distribution of moose�vehicle accidents in the Laurentides Wil...
Jun 16, 2011 ... Title: Spatial and temporal trends of deer harvest and deer-vehicle accidents in Ohio. Author: Iverson, Aaron L.; Iverson, Louis R. ...
Treesearch
Abstract: Rapid temporal fluctuations in exposure may occur in a number of situations such as accidents or other unexpected acute releases of airborne substances. Often risk assessments overlook temporal exposure patterns under simplifying assumptions such as the use of time-wei...
EPA Science Inventory
This report describes a method of evaluating the real safety of a car or a design feature by correlating data from mathematical simulations and occupant data from accidents. Extensive accident material with a certain car model is used to describe facial injuries for belted drivers in frontal impacts. In a carefully validated model, ...
We study in this paper the cross-correlation between self-affine time series of real variables recorded simultaneously in cases of taxi accidents. For this purpose, we apply the DCCA method and show that the cross-correlation can be divided into three distinct groups, if we look for the detrended covariance function, i.e., long-range ...
OBJECTIVE--To assess whether the increased prevalence of trisomy 21 in West Berlin in January 1987 might have been causally related to exposure to ionising radiation as a result of the Chernobyl reactor accident or was merely a chance event. DESIGN--Analysis of monthly prevalence of trisomy 21 in West Berlin from January 1980 to December 1989. SETTING--Confines of West Berlin. ...
PubMed Central
It was shown by two independent methods that there is a certain correlation between the number of aviation accidents and heliogeophysical factors. The statistical and spectral analyses of time series of heliogeomagnetic factors and the number of aviation accidents in 1989-1995 showed that, of 216 accidents, 58% are ...
Diffusion tensor MRI in temporal lobe epilepsy Konstantinos Arfanakisa, *, Bruce P. Hermannb was to investigate the diffusion characteristics of white matter in patients with focal temporal lobe epilepsy (TLE selected structure were tested for correlations with age at onset and duration of epilepsy. Significantly
Temporal dynamics and spatial-temporal correlations which have been found in living neural networks suggest that artificial neural networks which include such paradigms could exhibit substantial improvements with respect to their present capabilities. Bio...
To carry out the accident analyses for the HANARO, RELAP5/MOD2 was modified. The heat transfer correlations and other thermal hydraulic models to account for the finned fuel elements and plate-type heat exchangers were modified to give RELAP5/KMRR, simula...
The MELT-III code for analysis of a Transient Overpower (TOP) accident in an LMFBR is briefly described, including failure criteria currently applied in the code. Preliminary results of calculations exploring failure patterns in time and space in the reac...
Traffic accidents related specifically to alcohol use have been shown to be highly correlated with the age and sex of the drivers involved. This relationship reflects the lifestyle of American males, especially of young, unmarried males. Data from the Fat...
This is Vol. 7 of a 9 volume study of approximately 200,000 California drivers. The volume depicts the relationship between accident frequency and various types of violations in terms of correlation coefficients, regression slopes and cross tables. The vi...
Entrainment from a liquid pool with boiling or bubbling is of considerable practical importance in safety evaluation of nuclear reactor under off-normal transients or accidents such as loss-of-coolant and loss of flow accidents. Droplets which are suspend...
The objective of the study program is to design a railroad tank car head protective device which will reduce the frequency of head punctures in accidents. Accident data were reviewed in detail for the years 1965 through 1970 to correlate head damage frequ...
... main simulations posited zero temporal correlation among vital rates. Correlation structure A posits positive correlations of � = 0.8 ... between each of these and adult survival. Correlation structure B ...
Results of analysis of (7)Be, (137)Cs and (210)Pb on aerosol filters carried out from 1998 to 2010 in Monaco show that a weak correlation between activity concentrations of these radionuclides in the atmosphere and meteorological parameters has been found for (7)Be and temperature (r�=�0.50), (210)Pb and temperature and humidity (r�=�0.43 and 0.41, respectively), and ...
Jun 16, 2011 � Weak growth correlations at small spatial scales (average R = 0.084-0.406) ... However, significant positive growth correlations between ...
... Page 2. Orientational Pair Correlation, Polar Order Parameter and Temporal Stability in the Second Harmonic Generation of Amorphous Polymers ...
... temporal and/or spatial correlations. ... Descriptors : *EIGENVALUES, *DIRECTION FINDING ... WEIGHTING FUNCTIONS, CORRELATION, SIGNALS ...
temporal correlations to observed bandpassed data of about 0.50.9 over a significant ...... characterized by a correlation of 0.3. In the case of total ...
A correlation (both temporal and through the inhibitor, 2-deoxy-D-glucose) of callose deposition and
NASA Technical Reports Server (NTRS)
We reconstruct the temporal response of a random medium by using speckle intensity frequency correlations. When the scattered field from a random medium is described by circular complex Gaussian statistics, we show that third-order correlations permit retrieval of the Fourier phase of the temporal response with ...
Jun 16, 2011 ... Description: Kriging is a statistical technique that provides predictions for spatially and temporally correlated data. ...
