Abstract: Disclosed are a method and a system for bug localization based on a code knowledge graph, including the steps of: extracting source codes from a Git version control system, parsing in the source codes to generate an abstract syntax tree (AST), constructing a code knowledge graph, preprocessing the summary and description of a bug report crawled from a Bugzilla bug tracking system, and performing the named entity recognition to identify bug-related entity sequence, converting the code knowledge graph and the bug-related entity sequence into vector representation through an embedding algorithm, calculating cosine similarities of vector representations between the code knowledge graph and the bug entity sequence, ranking the similarities from high to low to generate a list of suspicious methods, filtering redundant information in the source codes, identifying bug-related entity elements in the bug report, and reserving the bug-related information.

Abstract: The present disclosure provides a display panel and a display device including the display panel. The display panel has a display region including a first display region and a second display region, and the first display region has a smaller sub-pixel density than the second display region. Light-shielding structures are arranged in the first display region, and one light-shielding structure overlaps a light-emitting region of at least one first sub-pixel. The light-shielding structure group constituted by the light-shielding structures includes main and auxiliary light-shielding structures having the same shape. When viewed from the top at the same viewing angle, the auxiliary light-shielding structure is equivalent to a structure obtained by rotating the main light-shielding structure by a certain angle in a plane where the main light-shielding structure is located. With this design, a light diffraction phenomenon is alleviated and the imaging quality of the under-screen optical device is improved.

Abstract: The topographic environment detection method and a topographic environment detection system based on a binocular stereo camera, and an intelligent terminal are provided. The topographic environment detection method includes: obtaining a left-eye image and a right-eye image about a same road scenario, and processing the left-eye image and the right-eye image to obtain a dense disparity map of the road scenario; converting image information in a detection region into 3D point cloud information in a world coordinate system in accordance with the dense disparity map; fitting a road surface model in accordance with the 3D point cloud information; inputting an image in the detection region into a trained semantic segmentation model, and obtaining a segmentation result from the semantic segmentation model; and obtaining topographic information about the detection region in accordance with the segmentation result, and transmitting the topographic information to a vehicle assistant driving system.

Abstract: The present disclosure provides a display panel and a display device including the display panel. The display panel has a display region including a first display region and a second display region, and the first display region has a smaller sub-pixel density than the second display region. Light-shielding structures are arranged in the first display region, and one light-shielding structure overlaps a light-emitting region of at least one first sub-pixel. The light-shielding structure group constituted by the light-shielding structures includes main and auxiliary light-shielding structures having the same shape. When viewed from the top at the same viewing angle, the auxiliary light-shielding structure is equivalent to a structure obtained by rotating the main light-shielding structure by a certain angle in a plane where the main light-shielding structure is located.

Abstract: Circuitry for providing an oscillating output signal in connection with an integrated circuit chip. This circuitry includes a crystal, off the chip and oscillator circuitry, on the chip, for electrically coupling with the off-chip crystal and operable to produce the oscillating output signal. The preferred embodiment further includes testing circuitry, on the chip, for evaluating whether the oscillating output signal is operating within an acceptable range, as well as operational recovery circuitry, on the chip, for attempting to restore the oscillating output signal, in response to the testing circuitry evaluating that the oscillating output signal is not operating within an acceptable range.

Abstract: Methods to make R13P?N—TiCl3 and (1-R2-Indenyl)Ti(N?PR13)Cl2, where R1 is independently selected from C1-30 hydrocarbyl radical which is unsubstituted or further substituted by one or more halogen atom, a C1-8 alkoxy radical, a C6-10 aryl radical, a C6-10 aryloxy radical, an amido radical, a silyl radical, and a germanyl radical; P is phosphorus; N is nitrogen (and bonds to the metal M); R2 is a substituted or unsubstituted alkyl group, a substituted or an unsubstituted aryl group, or a substituted or unsubstituted benzyl group, wherein substituents for the alkyl, aryl or benzyl group are selected from alkyl, aryl, alkoxy, aryloxy, alkylaryl, arylalkyl and halide substituents. The method to make R13P?N—TiCl3 combines a titanium species TiCl3(OR) where R is an alkyl or aromatic group, with a trimethylsilyl phosphinimide compound R13P?N—SiMe3 in the presence of solvent, to give the titanium complex R13P?N—TiCl3.

Abstract: Methods to make R13P?N—TiCl3 and (1-R2-Indenyl)Ti(N?PR13)Cl2, where R1 is independently selected from C1-30 hydrocarbyl radical which is unsubstituted or further substituted by one or more halogen atom, a C1-8 alkoxy radical, a C6-10 aryl radical, a C6-10 aryloxy radical, an amido radical, a silyl radical, and a germanyl radical; P is phosphorus; N is nitrogen (and bonds to the metal M); R2 is a substituted or unsubstituted alkyl group, a substituted or an unsubstituted aryl group, or a substituted or unsubstituted benzyl group, wherein substituents for the alkyl, aryl or benzyl group are selected from alkyl, aryl, alkoxy, aryloxy, alkylaryl, arylalkyl and halide substituents. The method to make R13P?N—TiCl3 combines a titanium species TiCl3(OR) where R is an alkyl or aromatic group, with a trimethylsilyl phosphinimide compound R13P?N—SiMe3 in the presence of solvent, to give the titanium complex R13P?N—TiCl3.

Abstract: In a self-contained plug-in display cabinet system (100), the evaporation temperature of the evaporator (25) is between ?4° C. and 2° C., and with the adaption of constant pre-cooling means (22), the high-temperature and high-pressure refrigerant gas discharged by the compressor (21) is pre-cooled allowing use of a low system pressure ratio and, thus, a high temperature compressor (21). Furthermore, there may be no need for the evaporator to be defrosted, which overcomes the drawbacks of the currently available display cabinet systems that the refrigeration cycles have to be interrupted for defrosting the evaporator, thereby having further energy saving and being advantageous in keeping the temperature of the food stable.

Abstract: A medium- and low-temperature integrated refrigerating/freezing system (40) comprises an integrated unit (41), a medium-temperature refrigerating cabinet (43), a low-temperature freezing cabinet (42) and corresponding connecting pipes (44). The integrated unit (41) further comprises a common condenser (54) for condensing the high-temperature and high-pressure gaseous refrigerant in the medium-temperature refrigerating system and the low-temperature freezing system, a common reservoir (55) for the storage of the high-temperature and high-pressure liquid refrigerant in the medium-temperature refrigerating system and the low-temperature freezing system, a subcooling adjusting mechanism (56, 57) for adjusting the subcooling degree in the low-temperature freezing system and a suction temperature adjusting mechanism (431, 432, 58) for adjusting the suction temperature of the low-temperature freezing system.

Abstract: A medium and low-temperature integrated refrigeration/freezing system (100) has the function of discharge gas defrosting. It comprises medium and low-temperature compressors sets (120, 122) and medium and low-temperature evaporators, as well as control valves (141, 142, 143, 144), adjusting valves (145, 146), one-way valves (147, 148) and expansion valves (150, 152, 154), and the switching between a refrigerating cycle and the discharge gas defrosting cycle is performed by the combination of actions between multiple control valves. When a first control valve is opened, a second valve is closed and a fourth valve is closed to the refrigerant pipeline to said reservoir, the refrigerating cycle operation is performed; and when the first control valve is closed, the second valve is opened and the fourth valve is closed to the refrigerant pipeline of an intercooler (128), the discharge gas defrosting operation is performed.