Abstract: A radio receiver, configured to use an impulse UWB, includes: a reception antenna which receives the impulse UWB, a reception unit which amplifies the received impulse UWB and detects an envelope of the impulse UWB, maximum-peak and minimum-peak detection units which detect a maximum value and minimum value of the envelope, respectively, a comparator which acquires signal data from the envelope with an initial threshold value, a baseband unit which measures an error rate of the signal data, an MPU which calculates a correction value based on the error rate, and an arithmetic unit which calculates a corrected threshold value based on the maximum, minimum and correction values. The arithmetic unit transmits the corrected threshold value to the comparator. The comparator acquires the signal data from the envelope based on the corrected threshold value transmitted from the arithmetic unit.

Abstract: A viewing material evaluating method includes: a brain activity measuring step of measuring a brain activity of a test subject who views a viewing material by using a brain activity measuring unit; a first matrix generating step of generating a first matrix estimating a semantic content of perception of the test subject on the basis of a measurement result acquired in the brain activity measuring step by using a first matrix generating unit; a second matrix generating step of generating a second matrix by performing natural language processing for text information representing a planning intention of the viewing material by using a second matrix generating unit; and a similarity calculating step of calculating similarity between the first matrix and the second matrix by using a similarity calculating unit.

Abstract: The semiconductor light emitting element is a semiconductor light emitting element comprising a semiconductor layer including a light emitting layer, wherein a surface of the semiconductor light emitting element includes a light extraction surface. At least one of the light extraction surface and an interface between two layers having different refractive indexes in the semiconductor light emitting element is provided with a periodic recessed and projecting structure having a period that exceeds 0.5 times as great as a wavelength of light emitted from the light emitting layer, and a minute recessed and projecting structure located on a surface of the periodic recessed and projecting structure and having an average diameter that is not more than 0.5 times as great as the wavelength of the light.

Abstract: An internal device of a brain-machine interface system includes: an electrode group including N electrodes, N being 2 or more; an amplification element group including N amplification elements; a communicator communicating with an external device; and a controller selectively executing one of: a normal operation mode in which electroencephalogram signals acquired through the N electrodes are supplied to the amplification element group in a manner that each of the N electrodes corresponds to a respective one of the N amplification elements, and N amplified electroencephalogram signals are transmitted; and a noise-reduction operation mode in which an electroencephalogram signal acquired through an M electrode of the electrode group is supplied to the amplification element group in a manner that each M electrode corresponds to respective plural ones of the amplification elements, and an M amplified electroencephalogram signal is transmitted, M being smaller than N.

Abstract: Provided is a communication system in which a terminal communicates with a server via a portable communication network used for communication between smartphones. The smart phone includes first pre-shared key and encryption keys, the terminal includes a second pre-shared key, the server includes the encryption keys same as the encryption keys included in the smartphone, authentication between the terminal and the smartphone is performed by using the first pre-shared key and the second pre-shared key, and the terminal and the server perform communication via the smartphone by performing key synchronization of the encryption keys while setting a hash value of the encryption keys as an ID.

Abstract: [Object] An object is to provide an F0 contour synthesizing device based on statistic model, to clarify correspondence between linguistic information and F0 contour while maintaining accuracy. [Solution] An HMM learning device includes: a parameter estimating unit representing an F0 contour 133 fitting a continuous F0 contour 132 as a sum of phrase components and accent components and estimating target points of these; and an HMM learning means conducting learning of HMM 139 using the fitted F0 contour as training data. The continuous F0 contour may be decomposed to accent components 134, phrase components 136 and micro-prosody components 138, and separate HMMs 140, 142 and 144 may be trained. Using results of text analysis, accent components, phrase components and micro-prosody components are separately synthesized from HMMs 140, 142 and 144 and the results are synthesized to obtain an F0 contour.

Abstract: Provided is a Ga2O3-based semiconductor element having less leak current and a large on/off ratio. In one embodiment, provided is a Ga2O3-based MISFET having a ?-Ga2O3 single crystal layer formed on a high-resistance ?-Ga2O3 substrate, a source electrode and drain electrode formed on the ?-Ga2O3 single crystal layer, a gate electrode formed between the source electrode and drain electrode on the ?-Ga2O3 single crystal layer, and an insulating film that has an oxide insulator as the primary component and that covers the surface of the ?-Ga2O3 single crystal layer at the region between the drain electrode and the gate electrode and the region between the gate electrode and the source electrode.

Abstract: Provided is a high-quality Ga2O3 semiconductor element. Provided is, as one embodiment of the present invention, a Ga2O3 MESFET (10), which includes: an n-type ?-(AlxGa1-x)2O3 single crystal film (3), which is formed on an ?-Al2O3 substrate (2) directly or with other layer therebetween, and is composed of an ?-(AlxGa1-x)2O3 single crystal (0?x?1); a source electrode (12) and a drain electrode (13), which are formed on the n-type ?-(AlxGa1-x)2O3 single crystal film (3); and a gate electrode (11), which is formed on a region between the source electrode (12) and the drain electrode (13) on the n-type ?-(AlxGa1-x)2O3 single crystal film (3).

Abstract: A wireless device and a communication method, which enable a position of the wireless device to be known and enable a frequency which does not interfere with that of another wireless station to be selected, are provided.

Abstract: Disclosed is an ion pump system capable of efficaciously utilizing electrical fields and magnetic fields in all portions of a getter face, and thus of substantially improving exhaust efficiency. In particular, the present disclosure is based on the discovery that disposing a plurality of disc-shaped electrodes upon an internal casing (12) and further disposing a plurality of disc-shaped electrodes also upon an external casing (11) eliminates saddle points, allowing efficacious utilization of electrical fields and magnetic fields in all portions of the getter face, and thus substantially improving exhaust efficiency.

Abstract: Disclosed is a wireless communication system and the like that can avoid interference even if a plurality of networks coexist. The wireless communication system includes a primary user, cluster head equipment, and a secondary user. The cluster head equipment is for providing a local area network to a cluster region containing the abovementioned primary user. Also, the cluster head equipment contains: an acquisition means that acquires one or both—of information regarding the primary user and information regarding a primary signal—and the like; and a transmission means that transmits information to the secondary user. Then, using this wireless communication system, the secondary user performs cognitive wireless communication or the like on the basis of the information received from the transmission means of the cluster head equipment.

Abstract: Provided is a wireless communication system capable of increasing safety in the aviation industry, and applicable to the aviation industry. The wireless communication system comprises a control device and a spectrum sensor. The spectrum sensor performs spectrum sensing using a measurement SAP, receives a signal from a wireless communication device, and transmits information relating to the received signal as sensing information through a communication SAP. On the other hand, the control device receives the sensing information from the spectrum sensor through the communication SAP. Subsequently, the sensing information is analyzed using an application SAP. Thereby, whether or not the signal from the wireless communication device interferes with the radio waves of the airband used in the aviation industry is specified.

Abstract: As optical elements for bending a light beam when it passes through an element face constituting one plane, a plurality of unit optical elements for reflecting light on one or more mirror surfaces arranged perpendicularly or at an angle nearly perpendicular to the element face are disposed to constitute an optical imaging element. Light emitted from projection object disposed on one side of the element face is reflected on the mirror surface when it passes through the element face so that a real image is formed in a space on the other side of the element face where a physical entity does not exist, thus constituting a display equipped with the optical imaging element. An aerial picture projection system not existing heretofore is also provided.

Abstract: A switch circuit connects a switch (SW) to a connector when a connector receives a signal and connects the switch (SW) to a terminal when the connector receives power. The connector receives a signal and power transmitted at the same frequency, outputs the received signal to a communication unit through an attenuator, and outputs the received power to a power receiving unit. The communication unit carries out reception processing to the signal and outputs the processed signal to a computer. The power receiving unit carries out reception processing to the power and stores the processed power. The power receiving unit supplies the communication unit or the computer with the stored power.

Abstract: A name system and method in a communication network, includes a technique for implementing naming in which security is ensured in an Internet environment and a personal network in which a user can access his own device or data.

Abstract: In a radio optical fusion communication system with the integration of an optical fiber transmission path and a radio propagation path, wherein by first and second light sources, an intermediate-frequency signal generating means for generating a modulating signal at an intermediate frequency band, a modulator for modulating an optical signal from the first light source into an SSB modulated optical signal using the intermediate-frequency signal, and an optical mixer for mixing the modulated optical signal with the optical signal from the second light source to obtain an optical transmission signal in a base station, the frequency of either of the optical signals is controlled such that the difference in frequency between the optical signals is a desired frequency of a modulated radio signal, thus switching the frequency channel of the modulated radio signal in the radio propagation path.

Abstract: By inputting words of source language as a keyword (31), a translation pairs are extracted (50) from a parallel corpus database including source language and target one. From the partially corresponding information on the translation sentence, a corresponding phrase group table formed by the corresponding phase of the target language corresponding to the source language phrase including a keyword phrase f the source language is stored (60). Text generator (70) assumes a relationship between the phrases of different language contained in the corresponding phrase group table and generates a text sentence candidate (32) of the target language.

Abstract: The present invention is a wireless communications system for simultaneously establishing a basic access network and a wireless access network using at least two kinds of wireless communication networks. The basic access network executes signaling communication in which communication is controlled so as to be continuously switched, whereas the wireless access network executes data communications other than the signaling communication. Then, a wireless communication terminal is provided with a position obtaining means and sends position information to a server, thereby it is possible to switch to an optimum network.

Abstract: The present invention is a method for presenting the content of images, in which, out of images that include at least moving images and can be segmented into a plurality of scenes, groups of two or more key images included in the individual scenes are extracted, and a digest screen of the images, which include the groups of key images, is organized. The method is characterized in that a scene segmenting step of generating individual segmented scenes and the following three steps for each scene are provided: a key-image extracting step, a preceding-and-following-key-image extracting step of extracting at least one still image time-oriented preceding the key image and/or at least one still image time-oriented following the key image, and a key-image weighting step of assigning a weight to the key image on the basis of a predetermined measure.