Abstract: A memory system which stores a journal including mapping change information, either in a first memory area or a second memory area, depending on available space of a memory device included in the memory system, being greater than a threshold.

Abstract: The present disclosure relates to a polycarbonate and a preparation method thereof, which has a novel structure with an improvement in weather resistance and refractive index, while having excellent mechanical properties.

Abstract: A memory system includes a memory device including memory blocks, and a controller configured to generate a result indicative of whether a number of free memory blocks satisfies a reference after beginning of garbage collection for the memory device, selectively perform a journaling operation for a request based on the result, and program data, collected by the garbage collection, in the memory device.

Abstract: A method of providing a chat service in a map-based virtual space includes receiving a place selection signal based on map information and/or a motion detection signal from user terminals, determining location information and FoV information of the corresponding account in the virtual space, determining image information of a perspective view and one or more other accounts to be displayed on the corresponding user terminal, receiving a chat request from a first user terminal, receiving a result regarding whether to accept a chat in response to the chat request from a second user terminal, determining whether an account of the first user terminal and the other account of the second user terminal on the street view satisfy a preset condition, and providing the chat service between the first user terminal and the second user terminal based on whether the chat is accepted and whether the preset condition is satisfied.

Abstract: A substrate integrated waveguide (SIW) cavity antenna is described that enables dual frequency and broadband operation, as well as enhanced protection from radio frequency interference (RFI) that may be present within an electronic device environment. The SIW cavity antenna includes a capacitively-coupled feed that is disposed within the volume of the SIW cavity antenna, which is enclosed on four sides via a set of electrically-conductive plates. The SIW cavity antenna radiates using the remaining two open sides as apertures. The SIW cavity antenna may include a meander line radiator to facilitate the operation of a second frequency band, as well as the use of a tuning stub to further enhance the impedance bandwidth.

Abstract: For example, an apparatus may include a Printed Circuit Board (PCB); a Multiple-Input-Multiple-Output (MIMO) radar antenna on the PCB, the MIMO radar antenna comprising a plurality of Transmit (Tx) antenna elements configured to transmit Tx radar signals, and a plurality of receive (Rx) antenna elements configured to receive Rx radar signals based on the Tx radar signals; and a surface wave mitigator connected to the PCB, the surface wave mitigator configured to mitigate an impact of surface waves via the PCB on a radiation pattern of the MIMO radar antenna.

Abstract: According to an aspect, a WPE-based dereverberation apparatus using virtual acoustic channel expansion based on a deep neural network includes a signal reception unit for receiving as input a first speech signal through a single channel microphone, a signal generation unit for generating a second speech signal by applying a virtual acoustic channel expansion algorithm based on a deep neural network to the first speech signal and a dereverberation unit for removing reverberation of the first speech signal and generating a dereverberated signal from which the reverberation has been removed by applying a dual-channel weighted prediction error (WPE) algorithm based on a deep neural network to the first speech signal and the second speech signal.

Abstract: Devices and methods for testing microelectronic assemblies including wireless communications are disclosed herein. For example, in some embodiments, a wireless testing system may include a radio frequency (RF) shielded chamber; a device under test (DUT) in the RF shielded chamber, wherein the DUT includes an array of first antenna elements; a testing apparatus in the RF shielded chamber including an array of second antenna elements at a first surface of a substrate to receive a test signal from the DUT, wherein a distance between individual second antenna elements and an adjacent second antenna element is at least half of a wavelength of the test signal, and wherein a distance between the first antenna elements and the second antenna elements is within a near-field region; and an array of electrical switches, wherein an individual electrical switch is coupled to a respective individual second antenna element.

Abstract: A water treatment system and a ballast water treatment method. A ballast water treatment system according to an embodiment of the present invention comprises: a first ballast water supply pipe for receiving a supply of ballast water from a first sea chest positioned in a non-explosion-proof area of a ship; an electrolytic bath for electrolyzing the ballast water supplied from the first ballast water supply pipe; a second ballast water supply pipe for receiving a supply of ballast water from a second sea chest, which is positioned in an explosion-proof area of the ship, and supplying the ballast water to a ballast tank of the ship; a filter provided to the second ballast water supply pipe so as to filter the ballast water passing through the second ballast water supply pipe; and a third ballast water supply pipe connected to the second ballast water supply pipe so as to supply the ballast water, which has been electrolyzed from the electrolytic bath, to the ballast water which has passed through the filter.

Abstract: The present invention relates to a method of preparing a population of antibodies, whereby a desired high-purity and high-quality population of antibodies can be prepared by removing impurities without using an expensive protein A column, and in particular, production costs can be significantly reduced while achieving process automation; and a population of antibodies prepared thereby.

Abstract: The present invention relates to: a method of purifying an antibody, which can prepare a desired antibody with high purity and high quality by removing impurities without using an expensive protein A column, and particularly, can purify an antibody in a high yield while greatly reducing an amount (volume) of a buffer used in an elution process; and an antibody prepared by the method.

Abstract: Proposed are a functional microcapsule processed to contain therein a germanium component having various physiologically active characteristics and a functional textile fabric to which the functional microcapsules are applied. The functional microcapsule includes a lipophilic oil, germanium ore powder or germanium oxide powder dispersed in the oil, and a shell made of a polymer material and containing therein the oil in which the germanium ore powder or germanium oxide powder is dispersed. These proposals may solve the problem of poor resistance to washing and poor washing durability, which have been pointed out as problems with conventional use of germanium, and may facilitate attachment and fixing of germanium to various media.

Abstract: For example, an apparatus may include a Printed Circuit Board (PCB); a Multiple-Input-Multiple-Output (MIMO) radar antenna on the PCB, the MIMO radar antenna comprising a plurality of Transmit (Tx) antenna elements configured to transmit Tx radar signals, and a plurality of receive (Rx) antenna elements configured to receive Rx radar signals based on the Tx radar signals; and a surface wave mitigator connected to the PCB, the surface wave mitigator configured to mitigate an impact of surface waves via the PCB on a radiation pattern of the MIMO radar antenna.

Abstract: Provided herein may be a memory controller and a method of operating the same. The memory controller may include a SPO detector configured to output a detection signal when a SPO is detected, a memory buffer configured to store host data, and a power loss controller configured to, based on the detection signal, receive dump data corresponding to the host data, store the dump data and a dump age corresponding to the dump data, and output the dump data and the dump age to a memory device, wherein the dump age indicates a number of times that different items of host data have been dumped from the memory buffer to the power loss controller, and the power loss controller is configured to control a recovery operation corresponding to the SPO based on the dump age being received from the memory device.

Abstract: Disclosed are a converter control device and a control method including a first switching element connected to each end of at least one first battery, a second switching element connected to the other end of the first battery and connected in series with the first switching element, a third switching element connected to one end of a second battery, a fourth switching element connected to the other end of the second battery and connected in series with the third switching element, an inductor connected to a first node between the first switching element and the second switching element and a second node between the third switching element and the fourth switching element, and a duty controller to receive each first voltage that is a voltage value of each end of the first battery and a second voltage that is a voltage value of one end of the second battery, and to output duty of the respective first switching element based on the first voltage and the second voltage.

Abstract: The present disclosure relates to an apparatus and a method for controlling an LLC resonance converter. The apparatus includes a converter connected to an input terminal, including a plurality of switching elements constituting a bridge circuit, and enabling a topology change in the form of a full bridge and a half bridge; and a controller detecting a charge measurement value of a battery being charged with a power transferred by the converter, and changing a topology of the converter based on the charge measurement value. Since battery charging is performed by changing the topology of the converter in accordance with the charge measurement value of the battery, the LLC resonance converter can be controlled at an optimized frequency, the efficiency is increased, and cost savings can be achieved.

Abstract: Various embodiments provide systems, devices, and methods for an antenna assembly included in an integrated circuit (IC) package. The antenna assembly may be used for near field wireless communication such as package-to-package and/or chip-to-chip communication. The antenna assembly may include a feed plate (e.g., a top feed) that is capacitively coupled to a first via and a second via. The feed plate may further be capacitively coupled to a loading structure. The first via may be conductively coupled to a ground potential. In some embodiments, the antenna assembly may further include a stub structure (e.g., an open stub or a short stub) that is conductively coupled to the second via. An impedance matching network may be coupled between the feed plate and an IC die that communicates using the antenna assembly. Other embodiments may be described and claimed.

Abstract: In some embodiments, a computer system chassis comprises a chassis side having an antenna portion and a fan portion. The antenna portion is located closer to an antenna located on an external surface of the chassis side than the fan portion. The antenna and fan portions comprise ventilation holes that provide for the venting of heated air from the chassis interior to the surrounding environment. In some embodiments, the ventilation holes in the antenna portion are thicker than the ventilation holes in the fan portion. The thicker ventilation holes provide an adequate level of EMI shielding for the antenna from platform noise generated by components (CPUs, GPUs, memories, etc.) located in the chassis interior. In other embodiments, the antenna portion comprises alternating positive and negative cross pattern ventilation holes and provides an adequate level of EMI shielding with the antenna portion ventilation holes having the same thickness as the fan portion ventilation holes.

Abstract: A knowledge distillation method based on a regression task according to an embodiment of the present disclosure includes training a first deep neural network model that is a teacher model including a first encoder and a first decoder, constructing a second deep neural network model that is a student model including a second encoder and a second decoder according to a preset constraint of a target system and initializing parameters of the second deep neural network model, performing a first knowledge distillation operation on the second encoder of the second deep neural network model based on the trained first deep neural network model, and performing a second knowledge distillation operation on the second encoder and the second decoder of the second deep neural network model based on the trained first deep neural network model.