Abstract: A volatility level associated with the funding level of a fund may be assessed with a memory and a processor. The processor is configured to store a plurality of data structures in memory. The data structures comprises a plurality of data items associated together as volatility measures, correlation measures that corresponds to correlation of the asset returns within the fund, duration measures that are related to the volatility measures, and holdings in the fund. The processor determines an asset class volatility measure based in part upon the volatility measures, the correlation measures, the duration measures, and the holding in the fund. The processor also determines a liability measure associated with the fund, a holding volatility measure based upon the asset class volatility measure and the percentage weight of the holding in the fund. The processor calculates a funded status volatility by comparing the holding volatility measure to the liability measure.

Abstract: A microwave vehicle-to-vehicle signaling device that converts microwave warning signals transmitted by a first vehicle into control signals in a second vehicle that are suitable for controlling audio devices or displays in such a way that the warning signals are perceived by the driver of a second vehicle to originate from the direction and distance of the first vehicle. Receiving vehicles located beyond the defined distance do not react to the warning messages due to the weakness of the signal.

Abstract: The current invention describes a microwave vehicle-to-vehicle signaling device that converts microwave warning signals transmitted by a first vehicle into control signals in a second vehicle that are suitable for controlling audio devices or displays in such a way that the warning signals are perceived by the driver of a second vehicle to originate from the direction and distance of the first vehicle. Receiving vehicles located beyond the defined distance do not react to the warning messages due to the weakness of the signal. The purpose of the invention is to reduce the ambient noise level in the environment by reducing the noise produced by automobile horns and other audible vehicle-to-vehicle signaling devices, and also to improve the effectiveness of warning signals exchanged among vehicles.

Abstract: A sliding weight Fourier transformer for the transformation of rows of numbers, in the process of which a new Fourier transformation is performed by making a correction to a previously determined Fourier transformation. In order to obtain a weighted Fourier transformation, the Fourier transformation is split-up in three transformations that can also be corrected and that together make up the weighted Fourier transformation.

Abstract: A volumetric phased array antenna system comprising a number of antenna elements, each of which is connected to a T/R (transmitter/receiver) module, being under the control of a beam steering computer (BSC), to which T/R module a transmitting signal is fed for forming a transmitting beam, via which T/R modules RF signals are received and via a radar receiver are fed to a signal processing unit connected thereto. The antenna elements are arranged in mutually spaced conformal curved virtual surfaces having the same center of curvature or the same centers of curvature, with each combination of antenna elements in one or more surfaces together forming a volumetric phased array antenna or a part thereof.

Abstract: A monopulse phased array system comprises antenna elements with T/R modules controlled a beam steering computer. The space in which the antenna elements are arranged is divided into quadrants which are defined relative to the main axis of the radar beam. From the signals received by means of separate antenna elements, sum signals and first and second angle difference signals are derived: After combination of these signals delivered by the T/R modules, control signals are obtained for resteering the radar beam generated under the control of the computer mentioned. Each of the T/R modules is provided with two 180° phase shifters for determining the angle difference signals.

Abstract: A radar apparatus provided with a sidelobe blanking circuit. The apparatus includes a directive antenna with a main receiver, and an auxiliary antenna with an auxiliary receiver. The apparatus also has a differential antenna with a differential receiver. Comparators compare the outputs of the auxiliary receiver and the differential receiver. Blanking does not occur when the output of the main receiver is larger than both other output signals.

Abstract: A radar apparatus provided with a transmitting unit, antenna unit and a receiver unit. The transmitting unit transmits pulses having a modulation for enabling pulse compression on reception. As an ECCM feature, the radar apparatus is further provided with a blanking circuit. The blanking circuit includes two filters, one filter being responsive to the first half of the transmitting pulse only and the other filter being responsive to the second half of the transmitting pulse only. Blanking occurs if both filters simultaneously produce an output.

Abstract: Radar apparatus provided with a transmitting unit (1), having a transmit phase shifter for providing each transmitted pulse in a burst with a selected phase shift, and a receiving unit (7), having a receive phase shifter (9) for cancelling the selected phase shift upon reception. This enables unimpeded radar transmissions and causes an operational repeater jammer to be misled.

Abstract: In a method of testing weld seams using an eddy-current technique, large-volume and coarse-grained weld seams are subjected to the testing, said weld seams being tested for the presence of faults in layers on-line during their buildup. The method is particularly suitable for testing components with austenitic weld metal. It is notable for a high fault location probability.

Abstract: A process and a device for the nondestructive ultrasonic testing of the material of generator rotor teeth providing with an inserted slot wedge, using a probe arrangement including transmit probes, reference probes and defect detection probes which are disposed on a support plate in such a manner as to be movably attached to the teeth, wherein ultrasonic beams are transmitted and reflected by the rotor teeth flanks and the reflected beams are received in a reference probe utilizing a two-fold deflection of the sound at the tooth flanks which are inclined with respect to the tooth back. An ultrasonic beam, reflected by any existing defects of a given type and orientation, is selectively received outside the receiving range of the normally reflected acoustic beam by means of a defect detection probe, and the damaged locations is detected by comparison of the ultrasonic signals received by the reference and defect detection probes.