摘要:
A method of computing a contour, such as the endocardial boundary in an ultrasound long-axis view of the heart, is disclosed. A plurality of points are input, each point being indicative of a predetermined landmark point in the image. A preliminary contour is then derived based on the input points and a known average contour shape which has been obtained from a database of contours derived from previous images. Finally, the preliminary contour is deformed to fit features identified in the image by a feature-extraction algorithm, to obtain the computed contour.
摘要:
It is an object of the invention to provide a sensor which is highly reliable, and a method of producing a sensor which is highly reliable, and which can be easily produced. A method of producing a sensor in which bending of a heater and the like hardly occur is provided. In the invention, an oxygen sensor (1) has: an oxygen sensor element (2); a metal shell (3); first and second sensor terminal metal parts (11), (12); a heater (15); heater terminal metal parts (16), (17); a metal outer tube (21); and a separator (31) which is housed inside the metal outer tube (21), in which the terminal metal part (11) and the like and the heater (15) are held, and which provides insulation between the terminal metal part (11) and the like. An outer-tube butting face (34a) is formed in a flange portion (34) of the separator (31). In the metal outer tube (21), a flange butting face (24b) which butts against the outer-tube butting face (34a) is formed. Both of the outer-tube butting face (34a) and the flange butting face (24b) form an inclined face which is more radially outward positioned as further advancing toward the tip end. The separator (31) is pressed toward the rear end. The pressing is conducted by deforming the metal outer tube (21), and deforming a pressing metal part (41) which is placed around a tip end side portion (33) of the separator (31).
摘要:
A method and apparatus for reducing the volume of a cylindrical tube for disposal by crushing flat and then shearing into small coupons. Shearing is accomplished by opposed dies having a checkerboard grid of cutting edges. The resulting coupons are preferably substantially square in shape. The invention is particularly useful for reducing the storage volume of irradiated radioactive pressure tubes from a nuclear reactor.
摘要:
A structure is disclosed which comprises a thermochromic layer located between a front layer and a back layer, wherein the front layer is a dielectric and is in contact with the thermochromic layer, and wherein the back layer is reflective to infrared (IR) radiation. Below the thermochromic transition temperature of the thermochromic layer, the front layer and thermochromic layer are IR-transparent, so the structure is highly reflective to IR radiation because of the presence of the reflective back layer. Consequently, the structure has a low emittance in this state. Above the thermochromic transition temperature of the thermochromic layer, the device structure becomes IR-absorbent, so the reflectance of the structure is reduced and hence its emittance is increased. The front layer index-matches with the thermochromic layer above the transition temperature of the thermochromic layer to enable radiation to enter the thermochromic layer.
摘要:
An optimization method comprises specifying an event; defining a set of outcomes for said event; defining at least one function representing a transaction between an exchange and another party, said at least one function being dependent on the outcome of said event; receiving, at said exchange, orders for at least one said transaction from at least one other party; constructing a map between the space defined by said at least one function and the space defining the proportion to which each received order is to be accepted; defining a hedging condition representing the maximum risk to which the exchange is to be exposed, using said map; defining at least one optimization criterion; calculating a solution for the values of the coefficients representing the proportions of each order to be accepted, subject to said hedging condition and said optimization criterion.
摘要:
The silicon nitride sintered material of the present invention contains silicon nitride, a Group 4a through 6a element, a rare earth element, and silicon carbide, and is characterized in that the amount of the rare earth element as reduced to a certain oxide thereof is 5.7-10.3 mol%; the ratio by mol of subtraction remainder oxygen amount as calculated in relation to the oxygen contained in the sintered material, the remainder oxygen amount being expressed in terms of silicon dioxide, to the amount of oxygen contained in the sintered material is at least 0.50 and less than 0.70; a four-component crystalline phase of rare earth element - silicon - oxygen - nitrogen is not present; and the thermal expansion coefficient is at least 3.7 ppm/°C between room temperature and 1,000°C.
摘要:
An arterio-venous graft 16 is provided with a constriction device 20 near its arterial end. The constriction device 20 is used to reduce the flow through the AV graft under normal conditions and to relieve the constriction when high flow through the AV graft is required, such as for vascular access for hemodialysis.
摘要:
A computer-implemented method for initiating a security event in response to a current temporal-geolocation of a mobile device varying from points in a map by more than a threshold amount, the computer-implemented method comprising: storing, by one or more computing systems, at a plurality of different times and different locations, a geolocation of the mobile device and a timestamp associated with the geolocation to create temporal-geolocation data; creating, by at least one of the one or more computing systems, the map for the mobile device based at least in part on the temporal-geolocation data; comparing, by at least one of the one or more computing systems, a current temporal-geolocation with the map to determine if the current temporal-geolocation varies from the map by more than a threshold amount; and initiating, by at least one of the one or more computing systems, a security event in response to the current temporal-geolocation varying from the map by more than the threshold amount.
摘要:
A high-frequency electric field coupler is provided for use in a contactless communication system propagating high frequency signals in a wide band utilizing electric field coupling. The coupler includes a coupling electrode and a resonance unit operating to increase the amplitude of an electrical charge accumulated at the coupling electrode at a predetermined resonance frequency. The coupling electrode is a linear conductor in the form of a coil.