Abstract: In a method for recovering lithium hydroxide from a lithium secondary battery, cathode powder is prepared from a cathode of the lithium secondary battery. A cathode active material mixture is prepared by mixing the cathode powder with a calcium compound. The cathode active material mixture is reduced to form a preliminary precursor mixture. A lithium precursor is recovered from the preliminary precursor mixture. Therefore, a lithium precursor can be obtained with high purity without a complicated leaching process or an additional process, which result from a wet-based acid solution process.

Abstract: A system selecting a process key factor in a commercial chemical process, includes: a data extraction unit that extracts tag data in units of a set period; an outlier discrimination unit that discriminates and aggregates outliers by tag by using an outlier extraction reference master; an outlier processing unit that generates an input mart draft excluding the outliers; a derived variable generation unit that generates derived variables for each tag, and generates an advanced input mart having the derived variable added thereto; a yield calculation unit that backs up the result of calculation of a yield by realizing a target value via exclusion and correction of the outliers; and a key factor extraction unit that extracts a yield key factor by calculating importance of each tag, and backs up importance data for each tag.

Abstract: A system for predicting process changes by using key factors in a commercial chemical process, includes: a key factor extraction and individual tag importance backup unit that extracts yield key factors by calculating the importance of each tag, and backs up importance data for each tag; and a yield prediction model training and yield prediction performing unit that performs yield prediction model training by using the importance of each tag accumulated in the key factor extraction and individual tag importance backup unit, and performs yield prediction so as to output a yield prediction result, evaluates performance, and selects an optimal prediction model.

Abstract: According to various examples of the present invention, an electronic device and a gaze tracking method of the electronic device: detect optical signals, which are outputted from a first light-emitting device and a second light-emitting device and reflected from a user's left eye and right eye, by means of a first camera and a second camera corresponding to each of the first light-emitting device and the second light-emitting device; and determine the user's gaze on the basis of the detected optical signals, wherein the first light-emitting device and the second light-emitting device can be positioned so as to correspond to a left-eye display region and a right-eye display region included in a display of the electronic device, respectively, and various other examples are also possible.

Abstract: An electronic device according to an embodiment may comprise: a speaker, an amplifier connected to the speaker through a first electrical path; and at least one processor electrically connected to the amplifier, wherein the at least one processor is configured to: provide a first audio signal set to a first volume level to the speaker via the amplifier; when the first volume level is less than a predetermined first value, output the first audio signal at the first volume level through the speaker; and when the first volume level is equal to or greater than the first value, control a volume level of the first audio signal on the basis of a temperature value of the speaker, which is estimated from the first audio signal.

Abstract: An electronic device according to an embodiment may comprise: a speaker, an amplifier connected to the speaker through a first electrical path; and at least one processor electrically connected to the amplifier, wherein the at least one processor is configured to: provide a first audio signal set to a first volume level to the speaker via the amplifier; when the first volume level is less than a predetermined first value, output the first audio signal at the first volume level through the speaker; and when the first volume level is equal to or greater than the first value, control a volume level of the first audio signal on the basis of a temperature value of the speaker, which is estimated from the first audio signal.

Abstract: According to various examples of the present invention, an electronic device and a gaze tracking method of the electronic device: detect optical signals, which are outputted from a first light-emitting device and a second light-emitting device and reflected from a user's left eye and right eye, by means of a first camera and a second camera corresponding to each of the first light-emitting device and the second light-emitting device; and determine the user's gaze on the basis of the detected optical signals, wherein the first light-emitting device and the second light-emitting device can be positioned so as to correspond to a left-eye display region and a right-eye display region included in a display of the electronic device, respectively, and various other examples are also possible.

Abstract: An electronic device comprising: a memory; a headphone jack; and at least one processor operatively coupled to the memory, configured to: detect an impedance of a first portion of the headphone jack; and detect whether a foreign substance is present in the headphone jack based on the impedance of the first portion of the headphone jack.

Abstract: Provided is a photographing apparatus. The photographing apparatus includes: a main body having an image pickup device disposed therein; a middle cover disposed in a back side of the main body and includes a first opening disposed to correspond to a position of the image pickup device; a first connector formed on the middle cover and around the first opening, where the first connector is configured to couple to an external optical component and is disposed so that the an optical axis of the image pickup device coincides with an optical axis of the external optical component, when the external optical component is coupled to the first connector; and a rear cover disposed on the middle cover and includes a second opening disposed to correspond to the position of the image pickup device.

Abstract: An electronic apparatus and a method of controlling the same are described. A method of controlling an electronic apparatus having a main processor and an image processor includes: booting the main processor and the image processor according to a power input signal of the photographing apparatus; when the image processor is completely booted, performing a photographing preparation operation; photographing an object, performed by the image processor, in response to a shutter release signal; and generating photographing data of the object, performed by the image processor.

Abstract: Provided are an apparatus and a method of providing a multiview still image service. The method includes: configuring a multiview still image file format including a plurality of image areas into which a plurality of pieces of image information forming a multiview still image are inserted; inserting the plurality of pieces of image information into the plurality of image areas, respectively; inserting three-dimensional (3D) basic attribute information to three-dimensionally reproduce the multiview still image into a first image area of the plurality of image areas into which main-view image information from among the plurality of pieces of image information is inserted; and outputting multiview still image data comprising the plurality of pieces of image information based on the multiview still image file format.

Abstract: The present invention relates to an apparatus and a method for processing three-dimensional (3D) image data of a portable terminal, and particularly, to an apparatus and a method for enabling contents sharing and reproduction (playback) between various 3D devices using a file structure for effectively storing a 3D image obtained using a plurality of cameras, and a stored 3D related parameter, and sharing and reproduction between various 3D devices are possible using a file structure for effectively storing a 3D image (for example, a stereo image) obtained using a plurality of cameras, and a stored 3D related parameter.

Abstract: An electronic device comprising: a memory; a headphone jack; and at least one processor operatively coupled to the memory, configured to: detect an impedance of a first portion of the headphone jack; and detect whether a foreign substance is present in the headphone jack based on the impedance of the first portion of the headphone jack.

Abstract: An electronic apparatus and a method of controlling the same are described. A method of controlling an electronic apparatus having a main processor and an image processor includes: booting the main processor and the image processor according to a power input signal of the photographing apparatus; when the image processor is completely booted, performing a photographing preparation operation; photographing an object, performed by the image processor, in response to a shutter release signal; and generating photographing data of the object, performed by the image processor.

Abstract: A semiconductor integrated circuit device includes a semiconductor substrate, a lower electrode disposed on the semiconductor substrate wherein an upper surface of the lower electrode has a recess, an interlayer insulating layer disposed on the semiconductor substrate and the lower electrode, the interlayer insulating layer including a variable resistive region exposing the upper surface of the lower electrode, and a variable resistive layer filled in the variable resistive region that contacts the recess of the lower electrode. The variable resistive layer is formed to have an increased width toward a top and a bottom thereof.

Abstract: An image reproducing method is described. A three-dimensional (3D) image file including a left image and a right image is reproduced. A first channel image is generated from the left image of the 3D image. A second channel image is generated from the right image of the 3D image. The first channel image is combined with the second channel image to generate an output image. The output image is displayed.

Abstract: A resistive memory device capable of preventing disturbance is provided. The resistive memory device includes a lower electrode formed on a semiconductor substrate, a variable resistor disposed on the lower electrode, an upper electrode disposed on the variable resistor, and an interlayer insulating layer configured to insulate the variable resistor. The interlayer insulating layer may include an air-gap area in at least a portion thereof.

Abstract: An apparatus and method control booting in a mobile device with a built-in communication module to prevent a service user from using the mobile device for other purposes and to prevent the service user from subscribing to another service provider. A method includes determining, during a booting operation, whether the communication module is mounted with a USIM. A forced booting termination message is displayed if the communication module is not mounted with the USIM. And power supply is interrupted after a predetermined time from displaying the forced booting termination message.

Abstract: A digital photographing apparatus and a method of controlling the same are provided. The digital photographing apparatus obtains a first image from an input image according to a first shutter input signal, obtains a second image from the input image according to a second shutter input signal, and corrects the second image based on the first image.

Abstract: An apparatus and method control booting in a mobile device with a built-in communication module to prevent a service user from using the mobile device for other purposes and to prevent the service user from subscribing to another service provider. A method includes determining, during a booting operation, whether the communication module is mounted with a USIM. A forced booting termination message is displayed if the communication module is not mounted with the USIM. And power supply is interrupted after a predetermined time from displaying the forced booting termination message.