Abstract: The present invention relates to ferroelectric capacitors, transistors, memory device, and method of manufacturing ferroelectric devices. The ferroelectric capacitor includes a first electrode, a second electrode facing the first electrode, a ferroelectric layer between the first electrode and the second electrode, and an interfacial layer between the ferroelectric layer and the first electrode or between the ferroelectric layer and the second electrode. The ferroelectric layer includes hafnium-based oxide. The interfacial layer includes HfO2.

Abstract: Disclosed is a method and system for international mobile equipment identity (IMEI) verification and unauthorized terminal detection based on contents of control plane messages exchanged in a process of a terminal that accesses a commercial network in a mobile communication network and the method includes constructing a fingerprint database for each terminal using contents of a control plane message generated in a process of a terminal that accesses a commercial network and a response to the control plane message; and verifying IMEI for an arbitrary terminal that accesses the commercial network using the fingerprint database.

Abstract: A micro-separator for gas chromatography includes a base substrate having a trench defining a micro-column, and a three-dimensional (3D) porous ceramic-polymer composite disposed in the micro-column and having pores that three-dimensionally connected to each other with periodicity. The 3D porous ceramic-polymer composite includes a ceramic nano-structure, which forms an array of three-dimensionally arranged nano-shells, and a reaction-activating layer combined on a surface of the ceramic nano-structure and including a polymeric reaction-activating material. A thickness of the 3D porous ceramic-polymer composite is 10 ?m to 20 ?m, a column length of the 3D porous ceramic-polymer composite is 30 cm to 70 cm, and a shell thickness of the ceramic nano-structure is 20 nm to 60 nm. The micro-separator may have improved separation performance and durability.

Abstract: Disclosed are a distributed learning-based multi-task vision transformer through random patch permutation and a transformation method using the same. The transformation method using the distributed learning-based multi-task vision transformer through random patch permutation may include preparing, using a task non-specific patch embedder, a patch embedding for each client and passing the patch embedding through a permutation module and then transmitting the patch embedding to a server; and storing ; by the server, the received patch embedding and using the patch embedding to update body and tail parts of a vision transformer model.

Abstract: The amplifier includes an input circuit configured to convert an input signal into a current; an output circuit comprising at least one switching element for reducing a voltage change of an output end of the input circuit and configured to provide an output signal; and a biasing circuit connected to the at least one switching element to form a feedback loop for reducing the voltage change of the output end of the input circuit.

Abstract: Disclosed is a write method comprising a step in which a storage device determines an execution order between received first and second write commands, and executes the first write command and the second write command according to the determined execution order. The first write command comprises first stream identification information having {first stream ID, first epoch ID}, the second write command comprises second stream identification information having {second stream ID, second epoch ID}, and when the first stream ID and the second stream ID are different from each other, the execution order is determined without using the result of comparison between the first epoch ID and the second epoch ID.

Abstract: The present invention relates to a device for a physical unclonable function having unique characteristics, and the device for a physical unclonable function according to the present invention includes a nano-pattern corresponding to a self-assembled structure. As the device for a physical unclonable function according to the present invention has a PUF pattern based on a self-assembled structure formed by spontaneous phase separation behavior of a block copolymer having non-deterministic characteristics, the device for a physical unclonable function may have unclonable unique characteristics.

Abstract: A disclosed polymer thin film includes a cationic polymer having a hydrolyzable side chain. The polymer thin film has a surface potential of 1 mV to 50 mV. A hydrolysis efficiency of the cationic polymer is 30% or more after reaction at 50° C. for one hour. The cationic polymer is dissolved to three-dimensionally capture nucleic acids, and releases the nucleic acids through hydrolysis. Thus, nucleic acid capturing-releasing efficiency can be improved.

Abstract: Disclosed is a method for estimating a channel of a terminal by a base station in a wireless communication system supporting multiple antennas, the method comprising the steps of: estimating a moving speed of the terminal on the basis of a first channel value acquired at a current time point and a second channel value acquired at a previous time point; determining, on the basis of the estimated moving speed, a complexity degree corresponding to the number of channel values for multiple time points including the current time point; and estimating a channel of the terminal at a next time point on the basis of the determined complexity degree.

Abstract: A catalyst for a hydrogenation reaction including a polymer support and a catalytic component supported on the polymer support. The polymer support consists of a repeating unit represented by any one of Formulae 5 and 7 to 13.

Abstract: Disclosed is a method and apparatus for learning a noise label based on test-time augmented cross entropy and noise mixing. The method includes obtaining noisy training data including clean label data and label noise data, selecting label noise for searching for mislabeled data by separating the clean label data and the label noise data from the noisy training data, and learning a classifier by mixing the noisy training data and the clean label data at a predetermined ratio.

Abstract: Disclosed are a design and manufacturing method for a three-dimensional electromechanical adhesive surface structure capable of adhesive force manipulation and tactile sensing by using 3D printing. The three-dimensional electromechanical adhesive surface structure includes: a body; a plurality of three-dimensional micro pillar structures which are attached to the body at a certain angle; and a wire which supplies voltage to the plurality of three-dimensional micro pillar structures. The three-dimensional micro pillar structure includes: a pillar which is attached to the body at a certain angle and is formed integrally with the body; a conductive material which is applied to surround the pillar; and an insulating material coated to surround the conductive material in order to be insulated from an opposite surface. The voltage supplied through the wire is supplied to the conductive material. A passage for providing the wire is formed under the plurality of three-dimensional micro pillar structures of the body.

Abstract: Disclosed is a conjugate gradient acceleration apparatus using band matrix compression in depth fusion technology including a band matrix conversion unit configured to convert an adjacency matrix for correcting depth data acquired from data of an image sensor through deep learning based on depth information acquired from a depth sensor into a band matrix using rows of the adjacency matrix as addresses of query points and columns of the adjacency matrix as the nearest neighbors at the query points, a band matrix compression unit configured to mark an index on each band in order to compress the band matrix and to compress data, a memory unit configured to store tile data of the band matrix, and a band matrix calculation unit configured to perform computation of the band matrix and a transposed band matrix or computation of a symmetric band matrix with respect to the band matrix and a vector.

Abstract: A 3D memristor element includes a 3D nano-composite including a resistance-varying part, a first conductor and a second conductor, a first terminal electrically connected to the first conductor, and a second terminal electrically connected to the second conductor. The resistance-varying part includes a plurality of nano-shells, which are three-dimensionally arranged and connected to each other. The first conductor is disposed in the nano-shells and has a 3D network structure thereby forming a 3D interface with the nano-shells. The second conductor three-dimensionally surrounds the resistance-varying part, and is separated from the first conductor by the resistance-varying part.

Abstract: A method and a device for estimating a channel in a wireless communication system are provided. Provided is a meta learning device including processing circuitry configured to receive pilot signals from a plurality of first user equipment (UEs) to obtain received pilot signals, the received pilot signals being based on existing wireless communication connections of the plurality of first UEs, and estimate channels of a plurality of second UEs via meta learning using the received pilot signals, the channels corresponding to new wireless communication connections of the plurality of second UEs.

Abstract: The present invention relates to an apparatus for reinforcing security of a mobile trusted execution environment, and relates to an apparatus for reinforcing security of a mobile trusted execution environment for constructing a general-purpose trusted execution environment. According to an embodiment of the present invention, a technology available for a general purpose in a mobile device operating on the basis of an ARM architecture has effects of configuring a trusted execution environment for guaranteeing safe execution of an application without depending on an existing commercial security technology, and of configuring a mobile trusted execution environment by using a write area execution prevention function and a debugging watchpoint, which are general-purpose hardware functions.

Abstract: The present invention relates to a method of manufacturing non-sintered liquid metal ink, and more particularly, to a method of manufacturing liquid metal ink manufactured without a sintering process. The method of manufacturing liquid metal ink according to an embodiment of the present invention includes: (a) inputting a solvent into liquid metal in a container at room temperature; (b) performing oxide film-removing treatment on the liquid metal of step (a); and (c) dispersing the liquid metal that has undergone step (b) in a form of nanoparticles through ultrasonic treatment.

Abstract: The present disclosure relates to a fine particle-trapping sensor including: a plasmonic hotspot layer formed of a first metal; and a trapping layer formed of a second material. The inventors of the present disclosure have made extensive research efforts to develop a more effective and novel sensor for the real-time and high-sensitivity detection of droplets emitted from the oral cavity. As a result, the inventors have developed an alloy composite nanostructure including a Raman sensor layer, formed of a metal, and a trapping layer formed of a dielectric material, and have found that, when the ratio between the two layers is adjusted, the alloy composite nanostructure effectively traps respiratory droplets rapidly emitted from the oral cavity and detects coronavirus (SARS-CoV-2 lysate) in the respiratory droplets at a concentration of 10 pfu/ml, indicating that the composite nanostructure may be very advantageously used in the field of fine particle trapping.

Abstract: A data storage device includes one or more nonvolatile memory devices each including a plurality of unit storage spaces; and an address recommending circuit configured to recommend a unit storage space among the plurality of unit storage spaces to process a write request, wherein the address recommending circuit applies feature data to a neural network to recommend the unit storage space, and wherein the feature data is generated based on request information for the write request, a target address corresponding to the write request, an address of data stored in the plurality of unit storage spaces.

Abstract: Disclosed are a DRAM device capable of storing charges for a long time and an operating method thereof. According to an embodiment, a DRAM device includes a channel region formed on a substrate, a gate insulating film region formed on the channel region, a floating gate region formed on the gate insulating film region, a transition layer region formed on the floating gate region, and a control gate region formed on the transition layer region and generating a potential difference with the floating gate region in response to a fact that a potential that is not less than a reference potential is applied and releasing at least one charge stored in the floating gate region or storing the at least one charge into the floating gate region, by generating a transition current due to the potential difference.