A method is described for a computerized search for words in an electronic database with a large number of documents stored in memory. With this method, a Boolean retrieval method is used to determine in which of a large number of documents an initial word meets a Boolean condition. A probabilistic retrieval method is then used to determine in which of the documents fulfilling the Boolean condition, the relevance of appearance of a second word exceeds a specified value. The two retrieval methods...

A probe for safely searching pockets for sharp or otherwise dangerous objects comprises a probe having a smooth and rounded tip attached to a flashlight. In use, the probe is inserted into portions of the suspect's clothing where potentially dangerous objects may be hidden. Objects are located by the sound generated when the probe contacts the object. Identification of the object is facilitated with the aid of the attached flashlight. The probe aids law enforcement personnel who must search crim...

A passive inductor and associated circuitry which enables a compact search oil to simulate the response characteristics of a service mine search coil having different electrical properties. Output from the passive inductor is amplified and modified to duplicate frequency response characteristics at ship frequency, magnetic sensitivity, and output impedance of a larger search coil. Provision is made for disengagement of magnetic surveillance by the inductor.

An observer door unit which can be installed and removed from an aircraft doorway during flight, especially designed for use in aerial search and rescue operations. The unit, in its simplest form, consists of a portable base, which can be loaded on and off the aircraft, on which is mounted a combination door and window unit. Generally the door and window unit is pivotally mounted on the base to facilitate storage and handling on the aircraft. The base is provided with quick release locks to secu...

A search circuit is provided for sequentially activating selected local oscillators to cause a radio receiver to receive the radio frequency channel corresponding to the frequency of the activated local oscillator. The search circuit provides repetitive pulses which are passed through a skip circuit and are then decoded in sequence. The decoded signals are applied to respective local oscillators and are also applied to respective memory circuits. Each memory circuit can be preset with a scan or ...

This invention intends to provide a system which makes it easy to search an object by making a number of a procedure of input as less as possible in a case that a factor of an area is regarded as important in searching an object. In order to attain this object an object to be searched is stored in advance together with information on an area relating to the object and the object is output which belongs to the specified area when a condition which is to be the object to be searched is input. If t...

A search and locate system includes a search station having an active, low light level electro-optic unit. A search beacon of nonvisible laser radiation is transmitted from the search station. A person to be located has a locator unit including a corner-cube retro-reflector which reflects a portion of the radiation of the search beacon back to the search station where it is detected by the low light level receiving apparatus. The locator unit also includes a photo-detector and indicator which pr...

A device is provided for reducing internal reflections from the tire of an ultrasonic search wheel probe or from within the material being examined. The device includes a liner with an anechoic chamber within which is an ultrasonic transducer. The liner is positioned within the wheel and includes an aperture through which the ultrasonic sound from the transducer is directed.

The search method comprises a first step of receiving a service inquiry request; a second step of making an inquiry about policy information of a client 100 who requested service and obtaining the policy information of the client 100 from a policy database 103; a third step of sending a request to search for a server matching the service sought after by the request and obtaining information showing the server matching the service from a registry 109; a fourth step of extracting a server meeting ...

Apparatus in a video disc player for previewing or scanning information on a record disc. A position sensor detects the position of a playback stylus relative to the carriage assembly for translating the stylus radially across the disc. The position sensor output signals energize a stylus skipper mechanism to translate the stylus a prescribed number of information tracks in accordance with the stylus carriage bias exceeding a threshold value. The carriage is manually moved across the record with...