Abstract: Disclosed are an electrolyte solution for a lithium secondary battery capable of improving the output and lifespan characteristics at high temperature of a lithium secondary battery, and a lithium secondary battery including the same. An electrolyte solution for a lithium secondary battery includes a lithium salt, a solvent, and a functional additive, and in particular, the functional additive includes (4-(1H-1,2,4-triazol-1-yl)phenyl)(fluorosulfonyl)sulfamoyl fluoride.

Abstract: The present disclosure relates to an electrolyte solution for a lithium secondary battery capable of improving the output and lifespan characteristics at high temperature of a lithium secondary battery, and a lithium secondary battery including the same. An electrolyte solution for a lithium secondary battery includes a lithium salt, a solvent, and a functional additive, wherein the functional additive includes a first electrode film additive, which is 3-(4-cyano-5-(4-nitrophenyl)-1H-1,2,3-triazol-1-yl)propyl 4-methylbenzenesulfonate.

Abstract: Disclosed are an electrolyte solution for a lithium secondary battery capable of improving the output and lifespan characteristics at high temperature of a lithium secondary battery, and a lithium secondary battery including the same. The electrolyte solution includes a lithium salt, a solvent, and a functional additive. The functional additive includes benzo[d]thiazol-6-yl(fluorosulfonyl)sulfamoyl fluoride.

Abstract: The present disclosure relates to an electrolyte solution for a lithium secondary battery capable of improving the output and lifespan characteristics at high temperature of a lithium secondary battery, and a lithium secondary battery including the same. An electrolyte solution for a lithium secondary battery includes a lithium salt, a solvent, and a functional additive, wherein the functional additive includes a positive-electrode film additive, which is 3-(4-cyano-5-(4-nitrophenyl)-1H-1,2,3-triazol-1-yl)propyl methanesulfonate.

Abstract: A system and method for managing a tractor-trailer and a method are provided. The system includes: a control server to manage a position of a trailer, identification information on the trailer, and identification information on a tractor matched to the trailer with respect to each hub; a trailer to authenticate the tractor by comparing the identification information, which is received from the control server, on the tractor, with identification information received from the tractor, and to release an electronic parking brake (EPB) when an authentication result for the tractor is correct; and a tractor to authenticate the trailer by comparing the identification information, which is received from the control server, on the trailer with identification information received from the trailer to authenticate the trailer, and to be coupled to the trailer, when an authentication result for the trailer is correct.

Abstract: An opening machining apparatus for a heat transfer tube, a method of machining an opening in a tube wall of a heat transfer tube using the same apparatus, and a method of removing a foreign material through the same opening are provided.

Abstract: An electronic device is provided that includes a display, a biometric sensor, a motion sensor, a communication circuit configured to receive a signal for obtaining information related to a location of the electronic device, and a processor electrically connected with the display, the biometric sensor, the motion sensor, and the communication circuit, wherein the processor is configured to identify repeated activities related to the user, which follow a lapse of time, based on motion information obtained according to the lapse of time by using the motion sensor and location information obtained according to the lapse of time by using the communication module, calculate a stress index of the user corresponding to the repeated activities based on biometric information obtained by using the biometric sensor, and provide at least one activity of the repeated activities and a stress index corresponding to the at least one activity.

Abstract: An electronic device is provided that includes a display, a biometric sensor, a motion sensor, a communication circuit configured to receive a signal for obtaining information related to a location of the electronic device, and a processor electrically connected with the display, the biometric sensor, the motion sensor, and the communication circuit, wherein the processor is configured to identify repeated activities related to the user, which follow a lapse of time, based on motion information obtained according to the lapse of time by using the motion sensor and location information obtained according to the lapse of time by using the communication module, calculate a stress index of the user corresponding to the repeated activities based on biometric information obtained by using the biometric sensor, and provide at least one activity of the repeated activities and a stress index corresponding to the at least one activity.