Abstract: Disclosed are a device and method for preparing fatty acid derivatives and more specifically, a device for preparing fatty acid derivatives including three reactors and a method for effectively preparing fatty acid derivatives. The device for preparing fatty acid derivatives including three reactors enables a stable supply of reactants even if a problem occurs in one reactor, and enables continuous and stable operation because delays in the treatment and purification process do not occur. As a result, the device has effects of increasing productivity and reducing production costs. In other words, by operating three reactors instead of two reactors, it is possible to build a production facility that can be operated continuously without stopping, resulting in increased production and reduced production costs. The reactors are operated at a time interval so that only one ammonia feeder and one ammonia collector may be used for all three reactors.

Abstract: A method for providing user-customized information is disclosed. The method for providing user-customized information can provide information suitable for a user's situation by: obtaining information on a location where a terminal is located, and information on the time when the location information was obtained; obtaining situation information of a user of the terminal predicted on the basis of the location information and the time information; and requesting, to a server, situation-adaptive information corresponding to the user's situation on the basis of the obtained situation information of the user, pre-stored profile information of the user, and state information of the terminal at a time when the location information is obtained so as to obtain the situation-adaptive information from the server.

Abstract: An electronic device and method for replacing and outputting an advertisement are provided. The electronic device includes: a memory storing at least one program; a communication unit configured to receive context data to be used to determine a state of a user, from at least one external device; and a processor configured to replace and output an advertisement by executing the at least one program, wherein the at least one program includes instructions to: acquire user state information indicating the state of the user from the received context data, based on a learning model using one or more neural networks; and perform control to replace a previously determined first advertisement with a second advertisement determined based on the user state information and to output the second advertisement.

Abstract: A display apparatus, a content recognizing method thereof, and a non-transitory computer readable recording medium are provided. The display apparatus includes a display, a memory configured to store information regarding a fingerprint which is generated by extracting a characteristic of a content, and a content corresponding to the fingerprint, a communication device configured to communicate with a server, and at least one processor configured to extract a characteristic of a screen of a content currently reproduced on the display and generate a fingerprint, to search presence/absence of a fingerprint matching the generated fingerprint in the memory, and, based on a result of the searching, to determine whether to transmit a query comprising the generated fingerprint to the server to request information on the currently reproduced content.

Abstract: A method for operating a content recognition apparatus is disclosed. The method for operating a content recognition apparatus according to an embodiment may comprise the steps of: obtaining at least one of a video fingerprint and an audio fingerprint of content corresponding to a content recognition request; retrieving, in a video fingerprint database and an audio fingerprint database for at least one broadcast service signal, a video fingerprint or an audio fingerprint which matches at least one of the obtained video fingerprint and audio fingerprint; and providing content information corresponding to the retrieved video fingerprint or audio fingerprint.

Abstract: Disclosed is a level castor including: a castor main body which has a socket shape having an opening, and in which a wheel contacting the ground is mounted therein and rotatably hinge-coupled to one portion of the lower side thereof; a connection frame which is rotatably connected to the castor main body and fixedly mounted to a weight disposed thereabove, thereby connecting the castor main body to the weight such that the castor main body can rotate with respect to the weight; a support body provided to the castor main body through the opening in a retractable manner so as to contact the ground; and an adjustment unit which is provided in an inner accommodation space of the castor main body, and which retracts the support body through a rotation operation of a rotation handle.

Abstract: A method for providing user-customized information is disclosed. The method for providing user-customized information can provide information suitable for a user's situation by: obtaining information on a location where a terminal is located, and information on the time when the location information was obtained; obtaining situation information of a user of the terminal predicted on the basis of the location information and the time information; and requesting, to a server, situation-adaptive information corresponding to the user's situation on the basis of the obtained situation information of the user, pre-stored profile information of the user, and state information of the terminal at a time when the location information is obtained so as to obtain the situation-adaptive information from the server.

Abstract: A display apparatus, a content recognizing method thereof, and a non-transitory computer readable recording medium are provided. The display apparatus includes a display, a memory configured to store information regarding a fingerprint which is generated by extracting a characteristic of a content, and a content corresponding to the fingerprint, a communication device configured to communicate with a server, and at least one processor configured to extract a characteristic of a screen of a content currently reproduced on the display and generate a fingerprint, to search presence/absence of a fingerprint matching the generated fingerprint in the memory, and, based on a result of the searching, to determine whether to transmit a query comprising the generated fingerprint to the server to request information on the currently reproduced content.

Abstract: A method for providing user-customized information is disclosed. The method for providing user-customized information can provide information suitable for a user's situation by: obtaining information on a location where a terminal is located, and information on the time when the location information was obtained; obtaining situation information of a user of the terminal predicted on the basis of the location information and the time information; and requesting, to a server, situation-adaptive information corresponding to the user's situation on the basis of the obtained situation information of the user, pre-stored profile information of the user, and state information of the terminal at a time when the location information is obtained so as to obtain the situation-adaptive information from the server.

Abstract: A display apparatus, a content recognizing method thereof, and a non-transitory computer readable recording medium are provided. The display apparatus includes a display, a memory configured to store information regarding a fingerprint which is generated by extracting a characteristic of a content, and a content corresponding to the fingerprint, a communication device configured to communicate with a server, and at least one processor configured to extract a characteristic of a screen of a content currently reproduced on the display and generate a fingerprint, to search presence/absence of a fingerprint matching the generated fingerprint in the memory, and, based on a result of the searching, to determine whether to transmit a query comprising the generated fingerprint to the server to request information on the currently reproduced content.

Abstract: A terminal device, a system, and a method for efficiently processing sensor data streams. The system for processing sensor data streams includes: at least one data collection unit for receiving the sensor data streams from at least one terminal device; and an allocation unit for monitoring a status of the at least one data collection unit, selecting one of the at least one data collection unit by using a monitoring result, and allocating the at least one terminal device to the selected data collection unit, wherein the at least one data collection unit receives the sensor data streams from the at least one terminal device allocated by the allocation unit.

Abstract: An electronic apparatus including a communication interface, a display, a memory configured to store one or more instructions, and a processor configured to execute the one or more instructions stored in the memory, wherein, when executed, the one or more instructions cause the processor to receive, based on a fingerprint extracted from content displayed on the display, information of a first broadcast channel corresponding to the content from a server and recognize the first broadcast channel corresponding to the content, in response to determining that a broadcast schedule of a replacement target existing advertisement is included in a broadcast schedule of the first broadcast channel, download a replacement advertisement from the server based on a start point of the replacement target existing advertisement, and reproduce the replacement advertisement at an advertisement time of the replacement target existing advertisement of the first broadcast channel.

Abstract: A cart has a wheel that is easily lockable and unlockable while being securely braked. The cart includes a platform having a wheel and on which freight is loaded, a handle bar including an inverted U shaped frame including a left frame, a right frame, and a connecting frame, a wheel locking and unlocking operation part provided on the inverted U shaped frame and configured to be pressed and elastically restored, and an operation part configured to operate by an operation of the wheel locking and unlocking operation part, and a folding operation part including a pedal provided at one end of the platform, a pedal connecting part connected to the pedal from a lower surface of the platform, and a folding operation rod supported by the pedal connecting part and configured to vertically move.

Abstract: An electronic device and method for replacing and outputting an advertisement are provided. The electronic device includes: a memory storing at least one program; a communication unit configured to receive context data to be used to determine a state of a user, from at least one external device; and a processor configured to replace and output an advertisement by executing the at least one program, wherein the at least one program includes instructions to: acquire user state information indicating the state of the user from the received context data, based on a learning model using one or more neural networks; and perform control to replace a previously determined first advertisement with a second advertisement determined based on the user state information and to output the second advertisement.

Abstract: Provided is a wheel that is easily lockable and unlockable while being securely braked. The cart includes a platform having a wheel and on which freight is loaded, a handle bar including a “?” shaped frame including a left frame, a right frame, and a connecting frame, a wheel locking and unlocking operation part provided on the “?” shaped frame and configured to be pressed and elastically restored, and an operation part configured to operate by an operation of the wheel locking and unlocking operation part, and a folding operation part including a pedal provided at one end of the platform, a pedal connecting part connected to the pedal from a lower surface of the platform, and a folding operation rod supported by the pedal connecting part and configured to vertically move.

Abstract: The present disclosure relates to a process for obtaining an ultrapure polymer by simply and effectively removing unreacted residual monomer in polymer, which is generated during production of a biodegradable polymer such as polylactic acid or derivatives thereof.

Abstract: A braking device including: a loading plate; a pair of front wheels and a pair of rear wheels; a handle provided with clamping units; buffer units installed at the loading plate; and a braking unit that includes: a plurality of engaging grooves formed along a rim of a circular recesses; a brake bar disposed between the rear wheels; an actuating link supported by the brake bar and connected to a hinge portion; a connecting link connected to the actuating link by an interlocking bar; a connecting spring connected to the brake bar and the interlocking bar, a push switch fixed at an upper side of the connecting link, and a foot brake pedal fixed at an upper side of the push switch and has a top surface exposed at the top of the loading plate.

Abstract: A method for operating a content recognition apparatus is disclosed. The method for operating a content recognition apparatus according to an embodiment may comprise the steps of: obtaining at least one of a video fingerprint and an audio fingerprint of content corresponding to a content recognition request; retrieving, in a video fingerprint database and an audio fingerprint database for at least one broadcast service signal, a video fingerprint or an audio fingerprint which matches at least one of the obtained video fingerprint and audio fingerprint; and providing content information corresponding to the retrieved video fingerprint or audio fingerprint.

Abstract: The present invention relates to a method for providing an app store service which implements 3rd party-based app stores by using a user's client and links the implemented app stores so as to be distributed by the 3rd party, and to a system for the same. The app store service system of the present invention includes: a plurality of app stores established for distribution; a mall integration server to manage the establishment and integrated operation of the plurality of app stores, and integrally analyze metadata collected from the plurality of app stores in order to provide app integration search and information on the basis of the plurality of app stores; and a client to perform integrated search and browsing for apps on the basis of the mall integration server and the app stores.