Abstract: Disclosed are compounds of formula (Ia) or a pharmaceutically acceptable salt thereof, pharmaceutical compositions comprising compounds of formula (Ia) and methods of using the same for treating cancer or a respiratory inflammatory disease and inhibiting arginase: wherein R1 is —NHR1a; R1a is —H or —C(O)CH(R1b)NHR1c; and R1b is selected from —H, —(C1-C4) alkyl and CH2OR1d and R1c is —H; or R1b and R1c, together with the atom to which they are attached, form a 5-membered heterocyclic ring; and R1d is H or —CH3.

Abstract: A split-screen display method and apparatus, and an electronic device thereof. A horizontal slide signal along a touchscreen or a vertical slide signal along the touchscreen entered by using the touchscreen is obtained; a current display area of the touchscreen is divided, according to the horizontal slide signal, into at least two display windows arranged up and down, or a current display area of the touchscreen is divided, according to the vertical slide signal, into at least two display windows arranged side by side, thereby implementing that multiple application programs are simultaneously displayed on a screen up and down or side by side, and a user does not need to frequently switch between programs, which facilitates user operations.

Abstract: An operating system recovery method is provided. The method includes starting a level 2 kernel, and transferring an image file of a to-be-recovered operating system to a specified location of a memory by using the started level 2 kernel so that a location of a recovery program in the level 2 kernel in the memory is the same as a location of a recovery program in an original kernel in the memory, where the level 2 kernel is obtained by tailoring an image file of the original kernel and then compiling a tailored image file of the original kernel; and recovering, by using the level 2 kernel, the operating system to a state, before the operating system enters a hibernation mode, of the operating system. A recovery speed of the operating system can be accelerated. In addition, a corresponding apparatus and terminal device are further provided.

Abstract: The present invention discloses a screen unlocking method, apparatus, and device, and relates to the field of touch control technologies, which can shorten the unlocking time and improve user experience. The method includes: displaying a screen unlocking interface which includes a password unlocking area and a shortcut unlocking area on a screen; receiving an unlocking pattern which includes a password unlocking pattern input through the password unlocking area and a shortcut unlocking pattern input through the shortcut unlocking area; determining whether the password unlocking pattern input by the user is consistent with a preset password unlocking pattern; and if the password unlocking pattern input by the user is consistent with the preset password unlocking pattern, unlocking the screen to enter a function interface corresponding to the shortcut unlocking pattern. The present invention is applicable to unlocking technologies of touch devices.

Abstract: An operating system recovery method is provided. The method includes starting a level 2 kernel, and transferring an image file of a to-be-recovered operating system to a specified location of a memory by using the started level 2 kernel so that a location of a recovery program in the level 2 kernel in the memory is the same as a location of a recovery program in an original kernel in the memory, where the level 2 kernel is obtained by tailoring an image file of the original kernel and then compiling a tailored image file of the original kernel; and recovering, by using the level 2 kernel, the operating system to a state, before the operating system enters a hibernation mode, of the operating system. A recovery speed of the operating system can be accelerated. In addition, a corresponding apparatus and terminal device are further provided.

Abstract: A split-screen display method and apparatus, and an electronic device thereof. A horizontal slide signal along a touchscreen or a vertical slide signal along the touchscreen entered by using the touchscreen is obtained; a current display area of the touchscreen is divided, according to the horizontal slide signal, into at least two display windows arranged up and down, or a current display area of the touchscreen is divided, according to the vertical slide signal, into at least two display windows arranged side by side, thereby implementing that multiple application programs are simultaneously displayed on a screen up and down or side by side, and a user does not need to frequently switch between programs, which facilitates user operations.

Abstract: The present invention discloses a screen unlocking method, apparatus, and device, and relates to the field of touch control technologies, which can shorten the unlocking time and improve user experience. The method includes: displaying a screen unlocking interface which includes a password unlocking area and a shortcut unlocking area on a screen; receiving an unlocking pattern which includes a password unlocking pattern input through the password unlocking area and a shortcut unlocking pattern input through the shortcut unlocking area; determining whether the password unlocking pattern input by the user is consistent with a preset password unlocking pattern; and if the password unlocking pattern input by the user is consistent with the preset password unlocking pattern, unlocking the screen to enter a function interface corresponding to the shortcut unlocking pattern. The present invention is applicable to unlocking technologies of touch devices.