Abstract: A helmet has an outer shell, an impact absorbing liner inside the outer shell to receive loads from the outer shell and an inner liner disposed inside the impact absorbing liner, with the inner liner configured to slide relative to the impact absorbing liner. The inner liner defines a number of apertures and a deflector inside each aperture. Each deflector has a body that is connectable to the impact absorbing liner; a peripheral border that is connectable to the aperture in which it is received; and a number of deformable spokes extending between the body and the border.

Abstract: An item of footwear such as a boot (10) includes a stiff lower part (12) that extends around part of a wearer's foot, a stiff upper part (16) that extends around the wearer's lower leg, and one or more limit elements (66,72,80,88) that extend between the lower part (12) and the upper part (16). The lower part (12) and upper part (16) are movable relative to each other when the ankle moves and the relative movement is inhibited selectively by the limit elements (66,72,80,88). The limit elements (66,72,80,88) are displaceable between a free condition in which the lower part (12) and the upper part (16) are movable relative to each other, and lock condition in which the relative movement between the lower part (12) and the upper part (16) is inhibited.

Abstract: A helmet comprises an outer shell, an impact absorbing liner inside the outer shell to receive loads from the outer shell and an inner liner disposed inside the impact absorbing liner, with the inner liner configured to slide relative to the impact absorbing liner. The inner liner defines a number of apertures and a deflector inside each aperture. Each deflector comprises: a body that is connectable to the impact absorbing liner; a peripheral border that is connectable to the aperture in which it is received; and a number of deformable spokes extending between the body and the border.

Abstract: Safeguarding communication channels is required in particular in wireless networks. The use of encryption mechanisms in the form of software is limited by the required calculation and energy capacities of mobile terminals. Costs are of significance when using hardware solutions for cryptographic operations. The present invention provides an approach which simultaneously tackles all those points. It concerns a hardware accelerator for polynomial multiplication in extended Galois fields (GF), wherein the per se known Karatsuba method is iteratively applied in accordance with the invention. When using the invention the area requirement can be reduced for example from 6.2 mm2 to 2.1 mm2. The solution according to the invention also reduces the energy consumption in comparison with solutions in accordance with the state of the art by 30%.

Abstract: Methods and apparatus for visualizing numerical benchmarks are disclosed, wherein a display containing information relating to the general performance of a business in relation to its industry is created. The display incorporates the lower quartile value, the median value, and the upper quartile value of an industry. The display further incorporates the business ratio value. The display further includes indications of whether the business ratio value demonstrates good performance or poor performance of the business in relation to its industry. Thus, a user viewing the display can determine what a particular business' general performance is in relation to the lower quartile value, median value, and upper quartile value of its industry.

Abstract: Safeguarding communication channels is required in particular in wireless networks. The use of encryption mechanisms in the form of software is limited by the required calculation and energy capacities of mobile terminals. Costs are of significance when using hardware solutions for cryptographic operations. The present invention provides an approach which simultaneously tackles all those points. It concerns a hardware accelerator for polynomial multiplication in extended Galois fields (GF), wherein the per se known Karatsuba method is iteratively applied in accordance with the invention. When using the invention the area requirement can be reduced for example from 6.2 mm2 to 2.1 mm2. The solution according to the invention also reduces the energy consumption in comparison with solutions in accordance with the state of the art by 30%.

Abstract: The invention relates to a method for detecting accidental arcs (arc tracking) on a cable (1), especially on a cable of an aircraft electrical system. According to said method, an alternating current signal (I(t)) that has been detected is sampled time-discretely and a trigonometric function (I(k)) imitating the alternating current characteristic is determined by interpolation of a number of sampling values (y(k)). The current alternating frequency (?) is then derived from this trigonometric function. The result of a comparison of the current alternating current frequency (?) and a set or reference frequency (??) is used to determine the presence of an accidental arc (ISA,IGA) and a warning signal (Sarc) is optionally generated. A device which functions according to this method is advantageously integrated into a circuit-breaker (7) for the aircraft electrical system, so that the latter is equipped to detect and deactivate accidental arcs that occur on the electrical system cable (1).

Abstract: A smart molecule system that may be embedded in a physical device in order to integrate information from external information sources in the physical device. The smart molecule system obtains information from external sources by connecting to a smart molecule service in a computer system through a URL to Number Transformation Algorithm (UNT) number. The UNT performs bi-directional transformation between the UNT number and a corresponding URL, thereby enabling physical devices with smart molecule to obtain information from the Web without using alphanumeric characters. Upon creating the UNT number and assigning it to an information source, a service provider distributes the UNT number to the smart molecule in order for the smart molecule to access the information stored therein.

Abstract: A system and method for defining, generating and identifying a geographic area is disclosed. This may be done by establishing zip codes as the basic building blocks for the geographic area. For example, the United States may represent a region, which includes all of the zip codes in the United States. A region may also be divided into mutually exclusive subregions. For example, individual states within the United States may represent the subregions, wherein the individual states represent all of the zip codes within that state. The subregions are then divided into mutually exclusive sections. For example, zip codes within the individual states may represent the sections. Simplified syntax is then used to allow a user to submit a query including parameters to identify subregions or sections that are to be included or excluded from the defined geographic area within the region. The system then processes this query and outputs a response representative of the query.

Abstract: Methods and apparatus for visualizing numerical benchmarks are disclosed, wherein a display containing information relating to the general performance of a business in relation to its industry is created. The display incorporates the lower quartile value, the median value, and the upper quartile value of an industry. The display further incorporates the business ratio value. The display further includes indications of whether the business ratio value demonstrates good performance or poor performance of the business in relation to its industry. Thus, a user viewing the display can determine what a particular business' general performance is in relation to the lower quartile value, median value, and upper quartile value of its industry.

Abstract: In order to be able to automatically locate and map ammunition over a large area without endangering the searching crew, ground-scanning sensors are mounted on a relatively light-weight, unmanned, remote-controlled vehicle which then travels over the area contaminated with ammunition. The controlled vehicle is controlled from, and the sensor signals are evaluated in, a second vehicle which is generally disposed in the immediate vicinity of the area being examined. The controlling vehicle, which is preferably armored, also accommodates the operating crew.

Abstract: In a method for the elimination of the d.c. voltage components of a capacitive a.c. voltage divider whose a.c. measuring voltage which may include a d.c. voltage component, is fed to a measurement transformer, the task is to be solved to remove as quickly as possible the d.c. voltage component of the a.c. measuring voltage also to the greatest extent possible without falsification of the reproduction of the middle or high voltage to be measured. This is achieved in that the a.c. measuring voltage (U.sub.M) is fed to a measuring amplifier (14) by way of two parallel lines (L1, L2) via a d.c. voltage blocking element (6). The a.c. measuring voltage (U.sub.M) is thereby fed directly by way of one line (L1) and the d.c. voltage component (U.sub.G) of the a.c. measuring voltage (U.sub.M) is determined in the other line (L2) in that the a.c. measuring voltage (U.sub.M) is subdivided into such small time sections (t) that an equal number of time sections is coordinated per cycle (T) or half cycle (T/2) and the a.c.

Abstract: The construction of an arrangement for data transmission between a number of interconnection units should be realized so that, after a disturbance, an extensive reconfiguration of the arrangement is possible, so that all interconnection units which still communicate via a connection are interconnected by means of transmission paths which merely follow a different course in comparison with the non-disturbed state. In accordance with the invention each interconnection unit is provided with a device for generating synchronization information and in the case of a disturbance, appearing as a breakdown of the normal data stream, all interconnection units enter a test state in which test information is transmitted and possibly received test information is returned via all connections. Consequently, in each interconnection unit it can be autonomously decided which data paths are to be interconnected.

Abstract: For radio communication with submarine vessels frequency ranges with very low frequencies are used. Even at these frequencies the penetration depth in salt water is only approximately 10 to 20 meters. In order to improve the signal noise ratio or to extend the submerging depth use is made of buoy antennas connected to the submarine vessel by a cable. In order to improve the manoeuvrability of the submarine vessel and to avoid the use of an active control system in the antenna, the antenna is constructed as a torpedo-like hollow body, which at the trailing part is equipped with two hydrofoils resembling a horizontal tail unit, which hydrofoils interconnect the top and bottom of the body to each other as an open arc. Both in the floating body and in the hydrofoils a loop of a crossed-loop antenna is incorporated, which loops are tuned in order to increase the sensitivity. Signal transmission to the submarine vessel is effected via an optical fibre guide, which also transmits the traction force.

Abstract: A filter arrangement has two hollow, coaxial, cylindrical filter elements, one of which is closed at one end and the other of which is connected to a clean fluid outlet. The outsides of the filter elements are separated from each other by an intermediate ring. A three-way valve is operable by an operating member to connect an inlet for the raw fluid to either or both of first and second filter elements. A control member operates valves for opening and closing an outlet for dirty fluid is operated at the same time with the three-way valve, dependent on its position. Both filter elements can be used simultaneously for filtering and also flow can be reversed through either filter element.