Abstract: Resonator and filter devices and methods of fabrication. A resonator chip includes a substrate, a piezoelectric plate, and an acoustic Bragg reflector between the substrate and a back surface of the piezoelectric plate. A conductor pattern on a surface of the piezoelectric plate includes a first plurality of contact pads and an interdigital transducer (IDT). The acoustic Bragg reflector is configured to reflect the shear primary acoustic mode. An interposer has a second plurality of contact pads on a back surface. A seal connects a perimeter of the piezoelectric plate to a perimeter of the interposer. Each contact pad of the first plurality of contact pads is directly connected to a respective contact pad of the second plurality of contact pads.

Abstract: Acoustic filters, resonators and methods are disclosed. An acoustic filter device includes a substrate; a piezoelectric layer attached to the substrate, wherein at least a portion of the piezoelectric layer is disposed over a cavity of the acoustic resonator device; and an interdigital transducer (IDT) on a surface of the piezoelectric layer, the IDT including interleaved fingers extending at least over the portion of the piezoelectric layer disposed over the cavity. The cavity has at least one rounded corner, and a portion of interleaved fingers extend from at least one busbar. Moreover, at least a portion of the rounded corner of the cavity is under the at least one busbar in a plan view of the piezoelectric layer.

Abstract: A filter device is provided that includes a substrate; a piezoelectric layer coupled to the substrate either directly or via one or more intermediate layers; a first interdigital transducer (IDT) of a first bulk acoustic resonator device on the piezoelectric layer and having interleaved fingers over a first cavity the first bulk acoustic resonator device; a second IDT of a second bulk acoustic resonator device on the piezoelectric layer and having interleaved fingers over a second cavity of the second bulk acoustic resonator device; a first dielectric layer having a first thickness disposed between the interleaved fingers of the first IDT; and a second dielectric layer having a second thickness disposed between the interleaved fingers of the second IDT. The first thickness is greater than the second thickness.

Abstract: Acoustic resonator devices and acoustic filter devices. An acoustic resonator includes a piezoelectric plate having front and back surfaces, a portion of the piezoelectric plate forming a diaphragm, and a conductor pattern on the front surface, the conductor pattern comprising an interdigital transducer (IDT), interleaved fingers of the IDT on the diaphragm. A ratio of a mark of the interleaved fingers to a pitch of the interleaved fingers is greater than or equal to 0.12 and less than or equal to 0.3. A thickness of the interleaved fingers is greater than or equal to 0.85 times a thickness of the piezoelectric plate and less than or equal to 2.5 times the thickness of the piezoelectric plate.

Abstract: A digital assistance for assisting a wearer of a hearing device to correctly arrange the hearing device with respect to an ear of the wearer, includes: a control configured to enable a preview of a first image to be displayed, wherein the first image is generated by a camera; wherein the control is also configured to enable a capturing of the first image, the first image showing at least the ear of the wearer with the hearing device arranged in and/or at the ear of the wearer; and wherein the digital assistance also comprises a comparator configured to perform a comparison between (1) the first image showing the at least the ear of the wearer with the hearing device and (2) a reference image.

Abstract: A digital assistance for assisting a wearer of a hearing device to correctly arrange the hearing device with respect to an ear of the wearer, includes: a control configured to enable a preview of a first image to be displayed, wherein the first image is generated by a camera; wherein the control is also configured to enable a capturing of the first image, the first image showing at least the ear of the wearer with the hearing device arranged in and/or at the ear of the wearer; and wherein the digital assistance also comprises a comparator configured to perform a comparison between (1) the first image showing the at least the ear of the wearer with the hearing device and (2) a reference image.

Abstract: A pelletizing device comprising a rotary drivable at least partly cylindrical die, wherein the cylindrical part comprises a multitude of radial openings for making of pellets and at least one roller rotatable around a stationary shaft, for pressing of material to be pelletized through the radial openings in the die, wherein the roller is mounted to the corresponding stationary shaft by means of at least one roller bearing and wherein the pelletizing device comprises an oil circulation system for lubricating each of the roller bearings of each of the rollers with oil.

Abstract: A pelletizing device comprising a rotary drivable at least partly cylindrical die, wherein the cylindrical part comprises a multitude of radial openings for forming of pellets and at least one roller rotatable around a stationary shaft, for pressing of material to be pelletized through the radial openings in the die, wherein the roller is mounted to the corresponding stationary shaft by means of at least one roller bearing and wherein the pelletizing device comprises an oil circulation system for lubricating each of the roller bearings of each of the rollers with oil.

Abstract: The oscillatory dynamics of inferior olive (IO) neurons found in the olivo-cerebellar network of the brain are reproduced and applied to various control applications. An IO neuron model is provided which produces quasi-sinusoidal oscillations with a characteristic amplitude and frequency. Action potentials occur at the peaks of the oscillations and have precise timing properties. Stimuli applied to the IO neuron model show no changes in oscillation amplitude and frequency but do produce a shift of the oscillation phase, and hence a time shift of the corresponding action potentials. The resulting phase is defined by the strength of the stimulus and does not depend on when the stimulus is applied, thus providing a self-referential phase reset (SPR) effect. The oscillations of multiple IO neurons, or their models, coupled together tend to become organized in space and time in the form of oscillatory phase clusters.

Abstract: A control system and method base on a model of a neurological structure such as the inferior olive of the brain. In one embodiment, individual inferior olive neurons are modeled in hardware, such as in an integrated circuit, and interconnected to form an artificial inferior olive. The artificial inferior olive thus formed can be used in a universal movement control system. An exemplary system for controlling the operation of a six-legged walker is described. The degree of coupling between neurons can be varied. A model is also provided which mimics the interaction between neurons of the inferior olive, the cerebellar nuclei and Purkinje cells via collateral axons. The model accurately describes the qualitative dynamics of cluster formation and spike-train generation in the olivo-cerebellar system. A universal control system (UCS) based on the olivo-cerebellar system is described.

Abstract: The present disclosure relates to increasing the external efficiency of light emitting diodes, and specifically to increasing the outcoupling of light from an organic light emitting diode utilizing a diffraction grating.

Abstract: The present disclosure relates to increasing the external efficiency of light emitting diodes, and specifically to increasing the outcoupling of light from an organic light emitting diode utilizing a diffraction grating.

Abstract: An optical system including: a substrate having a recess; and, a substantially planar, semiconductor waveguiding membrane suspended over the recess and having a thickness less than about 200 nm; wherein, the optical system supports a propagating optical mode having a majority of its energy external to the semiconductor waveguiding membrane.

Abstract: A control system and method base on a model of a neurological structure such as the inferior olive of the brain. In one embodiment, individual inferior olive neurons are modeled in hardware, such as in an integrated circuit, and interconnected to form an artificial inferior olive. The artificial inferior olive thus formed can be used in a universal movement control system. An exemplary system for controlling the operation of a six-legged walker is described. The degree of coupling between neurons can be varied. A model is also provided which mimics the interaction between neurons of the inferior olive, the cerebellar nuclei and Purkinje cells via collateral axons. The model accurately describes the qualitative dynamics of cluster formation and spike-train generation in the olivo-cerebellar system. A universal control system (UCS) based on the olivo-cerebellar system is described.

Abstract: Novel platinum(II) carboxylatocomplexes of the following general formula: ##STR1## wherein R is tetrahydrofurfuryl or cyclo-C.sub.n R".sub.2n-1, R" is H, an alkyl, hydroxyl, n=3-6; R' is --CH.sub.2 --, --CH.sub.2 --CH.sub.2 --, --CH(OH)--, --CH(OH)--CH.sub.2 --, --CH(OH)--CH(OH)--.These compounds possess a clearly pronounced antitumor activity and are readily soluble in water.A process for preparing these compounds comprises reacting K [PtCl.sub.3 NH.sub.3 ] with KI, followed by treatment of the reaction mixture with tetrahydrofurfurylamine or an alicyclic amine and treatment of the resulting mixture of complexes with a silver salt of the formula: Ag.sub.2 (OOC--R'--COO), wherein R' is as identified above.

Abstract: The semiconductor light emitter comprises a substrate (I) from a single-crystalline material transparent within the visible range of spectrum. Onto the substrate (I) there are deposited: a layer (2) of gallium nitride of the n-type conductivity and, above it, a layer (3) of gallium nitride alloyed with acceptor dopes. The emitter also comprises two metallic electrodes (5) and (6). Onto the electrode (5) a negative-polarity voltage is applied, onto the electrode (6)--a positive-polarity voltage. According to the present invention, over the layer (3) of gallium nitride alloyed with acceptor dopes a layer (4) of an insulating material is formed. The process for manufacturing the semiconductor light emitter comprises epitaxially growing, on a substrate of a single-crystalline material transparent within the visible range of spectrum, a layer of gallium nitride of the n-type conductivity; epitaxially growing, on this layer, a layer of gallium nitride alloyed by acceptor dopes, and forming two electrodes.

Abstract: A tool for the formation of holes without extracting the soil comprises a body having a cylindrical calibrating portion, coaxial portions with surfaces for the compaction of the soil and radii decreasing stepwise in the direction away from the calibrating portion, and terminating in an end piece. The body has also transition portions with surfaces for the compaction of the soil, forming a smooth transition from a coaxial portion with a larger radius to an adjacent coaxial portion with a smaller radius. The surface for the compaction of the soil of each coaxial portion is a conical surface having the configuration of a ribbon wound from the calibrating portion to the end piece and comprising the transition portions.

Abstract: An apparatus for dissolving polydisperse ores comprises a cylindrical housing made up of two coaxial cylinders mounted one above the other, the relation between the diameters and the heights thereof being respectively 1.4-1.6 and 0.5-1.5, which ensures separation of ore particles of a (-1.5 to 0.75) mm size class. A hopper is mounted coaxially with the housing. The apparatus also contains devices for feeding a liquid phase, one of which is located in the lower portion of the housing, and another device, located over the housing's upper cylinder, is provided with nozzles facing the inner surface of the hopper walls. A device for the reduction of horizontal intermixing is made in the form of vertical inserts.The apparatus is also provided with a device for removal of the solid undissolved component, containing conical traps.

Abstract: There is provided an engine test method whereby the engine involved is started and the systems thereof are regulated so as to obtain steady running, whereupon, by controlling fuel feed, a running-in process is performed by repeatedly carrying out runup-rundown cycles. In every running-in cycle, beginning with the first one, at least one of the parameters, for example, the acceleration of rundown, is measured and analyzed for the purpose of assessing the technical condition of the engine on which basis the parameters of the next running-in cycle are selected, the running-in process being ended at the instant when the engine reaches the predetermined technical condition.