How much child molestation occurs in our society and how much is homosexual? Random-probability samples in Los Angeles, Denver, Omaha, Louisville, and Washington, DC yielded 4,340 adults who answered an extensive questionnaire regarding sexual attitudes, activities, and experiences. Results indicate that perhaps 16% of both boys and girls claim sexual relations with an adult before the age of 16; if only experiences with men are counted about 5% of boys and 15% of girls claim sexual involvements. Sexual contacts with adults before respondents were aged 13 were claimed by 9% of boys and 7% of girls; if only experiences with men are counted, only 3% of boys claimed molestation. Considering only children's claims of sex with men, about a third were homosexual molestations. About 1% of females claimed some sexual involvement with their fathers and a like number with stepfathers. The latter were considerably more apt to be considered “serious.” About 1% of elementary pupils and 3% of secondary pupils claimed sexual advances by teachers and about a third of these advances resulted in physical sexual contact. Bisexuals or homosexuals claimed much more frequent sexual contact with caretakers, and homosexuality was disproportionately implicated in sexual events under caretakers' charge. No generational differences in rate of claims of sexual molestation were found.

A bstruct-Rail guns generate electromagnetic signatures that contain frequencies extending from quasi-dc to tens of kHz.The c h a r a c t e r i z a t i o n of these fields for electromagnetic compatability concerns remains, however, largely unexplored. Accordingly, this paper includes a discussion of the theoretical models used to predict the inductance gradient, the transient behavior of the currents produced in the rail gun structure, the dynamical generation of the external fields, and a comparison of the theoretical model with experimental data.The predicted rail inductance gradient of LL = 0.52 p H / m compares very well with the measured value of 0.522 p H / m . The existence of an inductance gradient efficiency factor, E,,, is demonstrated, with a derived value of 0.75. This produces an effective inductance gradient of L' = E ,,LL = 0.39 p H / m which leads to a predicted muzzle velocity of 525 m/s that is within 5% of the measured value.Predicted magnetic field waveshapes a r e in good agreement with observations close to the bore center.For radial distances greater than a foot, measured peak fields exceed predictions by a factor of two to three. This issue is being investigated. a limited comparison with experimental data. Companion paprs by Cobum et al. [1]-[2] address the observations and experimental configuration in detail.The incorporation of a rail gun into a weapon system requires a quantification of the relationship between the power source, rail gun dynamics, and electromagnetic fields generated by the rail and armature currents. In order to ensure EMC with other equipment, it is necessary to not only characterize the dominant low-frequency (dc to tens of kHz) fields generated by the moving armature, but also the higher frequency emissions generated by continuum arcing along the rails, and the larger arc produced at the muzzle.For predicting the low-frequency magnetic fields it appears that the circuit approximation to the rails, which has traditionally been used to study armature acceleration, is probably adequate. On the other hand, a modal analysis of the rail system model viewed as a transmission line is required at higher frequencies in order to model arcing contributions. In addition, it may be necessary to incorporate the effects of electromagnetic shielding in the evaluation of EMC for an actual system. This paper is the first in a series of reports that eventually will quantify EMC considerations for all frequencies of interest. We concentrate at present only on the low-frequency fields generated by the rail current in a solid mature, for which there is negligible arcing. CONCEPTUAL ISSUES AND OVERVIEW

Directive antennas are required for the development of high-power microwave (HPM) transmission system concepts. The type of system considered includes a single HPM source with waveguide output, the antenna, and the control/support equipment integrated onto a ground-mobile platform. A parabolic reflector with a custom-designed horn feed has been demonstrated as one antenna option that allows direct connection to the HPM source waveguide output. An alternative approach to reflector antennas is desired, so a slotted-waveguide array was selected to meet the operational requirements. The array design is modular (with four symmetric modules) to ease fabrication and to maximize transportability and repairability A rectangular waveguide corporate-feed network is used to minimize the antenna subsystem volume (i.e., depth) and allow the HPM source to be integrated into the feed structure. An S-band array and feed structure were fabricated and assembled for laboratory evaluation. The array was fabricated from WR-284 copper waveguide with brass end caps to a ±5-mil tolerance. The array design, fabrication, assembly, and testing are discussed. Preliminary test data for a single module of the four-module full array are presented. As expected, the array as fabricated requires "finetuning" to optimize performance. Empirical results will be used to evaluate design alternatives appropriate for particular HPM applications.n

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method. This represents a typical time for far-field calculations and the actual time required varies with azimuth and depression angle (due to different multi-