Abstract: Embodiments of this application disclose a method for detecting a backup file and a related device. The method includes: obtaining an encryption heatmap of each of a plurality of backup files; determining an encryption score of the backup file based on distribution of a target color in the encryption heatmap; constructing a sequence from the encryption score of each backup file, and performing sampling on the sequence by using a sliding window, to obtain a plurality of subsequences; and performing time sequence anomaly detection on the plurality of subsequences, and determining that a backup file corresponding to an encryption score in an abnormal subsequence is ransomware-encrypted. In this way, it can be detected, without parsing the backup file, whether the backup file is ransomware-encrypted.

Abstract: The present application provides a loose tube and an optical cable having the same. The loose tube includes: a central portion including a first filler and a plurality of first optical units arranged within the first filler; an inner coating layer sleeved on the outer sidewall of the central portion; an intermediate layer sleeved on the outer sidewall of the inner coating layer, the intermediate layer including a second filler and a plurality of second optical units arranged within the second filler; an outer coating layer sleeved on the outer sidewall of the intermediate layer; and a separating portion arranged on the inner coating layer or within the intermediate layer and dividing the plurality of second optical units into a plurality of optical unit groups.

Abstract: Embodiments of this application provide a method for detecting ransomware, a related system, and a storage medium. The method includes: obtaining a partial feature of a target file based on preset data in the target file, where the partial feature includes a partial incremental entropy and/or partial histogram statistical data; determining, based on the partial feature of the target file, whether the target file is an encrypted file; and determining, if the target file is the encrypted file, that the target file is attacked by the ransomware. The method can increase file detection efficiency and accuracy.

Abstract: The present application provides an all-dry optical fiber ribbon cable, including an optical unit, a first buffer layer, a first waterproof layer, a loose tube, a second waterproof layer, an armor layer, and a protective layer; where the optical unit includes a plurality of fiber ribbons; the first buffer layer, the first waterproof layer, the loose tube, the second waterproof layer, the armor layer, and the protective layer are sequentially sleeved over the plurality of fiber ribbons. The first buffer layer is a high elastic polymer material layer, and a Shore hardness of the first buffer layer is 45HA-85HA, a tensile strength of the first buffer layer is greater than or equal to 10 MPA, a breaking elongation of first buffer layer is 200%-600%, and a compression permanent deformation rate of the first buffer layer is less than or equal to 30%.

Abstract: Disclosed are an overhead ribbon cable, a manufacturing method, and a manufacturing system for the overhead ribbon cable. The overhead ribbon cable includes an optical fiber ribbon array (10). The optical fiber ribbon array (10) includes a plurality of optical fiber ribbons (11) arranged in an array. A surface of the optical fiber ribbon array (10) is wrapped sequentially with a water-blocking assembly and an outer protection layer (50). The water-blocking assembly includes a water-blocking sealing layer (20) formed by heating and curing a sealant. The water-blocking sealing layer (20) wraps the surface of the optical fiber ribbon array (10) in an axial direction of the optical fiber ribbon array (10) and fills a gap between two adjacent optical fiber ribbons (11). The overhead ribbon cable has improved splicing efficiency, and is clean and environmentally friendly.

Abstract: A micro-cable, a manufacturing method therefor, and a filling device, which relate to the technical field of micro-cables, the micro-cable being used for transmitting signals. The micro-cable comprises a cable core and an outer sheath covering the peripheral surface of the cable core, wherein the cable core comprises a central strengthening member, a plurality of optical units and a sealant, with the plurality of optical units being twisted around the central strengthening member, and twisting gaps between the plurality of optical units being filled with the sealant. Further provided is a method for manufacturing the micro-cable. The filling device comprises a sealant-injection and stranding mold, a sealant injection valve, a sealant pump, and an air source, wherein the sealant-injection and stranding mold is internally provided with a filling channel and a sealant injection channel.

Abstract: Disclosed are a method for recovering lithium from lithium iron phosphate waste and application thereof. The method comprises the following steps: (1) adding water to lithium iron phosphate waste to obtain a lithium iron phosphate slurry (2) adding a soluble iron salt to the lithium iron phosphate slurry to perform a reaction, and filtering a resulting product to obtain an iron phosphate slag and a filtrate containing Li+ and Fe2+; (3) adding an oxidizing agent to the filtrate to perform a reaction and filtering a resulting product to obtain iron hydroxide and a filtrate containing Li+, Fe3+; (4) performing a multi-stage counter-current circulation leaching to the mixture of the filtrate and the lithium iron phosphate waste to obtain a lithium solution. The present disclosure adopts a soluble iron salt capable of accelerating the conversion of lithium iron phosphate.

Abstract: Disclosed are a method for removing elemental copper from ternary battery waste and its application. The method comprises the following steps: crushing and screening the ternary battery waste to obtain a powder, and then removing iron by magnetic separation to obtain an iron-removed ternary waste; Adding an alkaline solution to the iron-removed ternary waste to perform an aluminum removal reaction, filtering to obtain a filter slag and aluminum-containing wastewater, washing the filter slag with water and drying to obtain a copper-nickel-cobalt-manganese material. Adding an iron salt solution to the copper-nickel-containing material to perform a leaching process, filtering to obtain a leachate and a nickel-cobalt-manganese waste; adding iron powder to the leachate and stirring to perform a reaction, filtering to obtain a copper residue, washing the copper residue with water and drying to obtain a copper-removed liquid and a sponge copper.

Abstract: This disclosure discloses a method for recovering lithium from a waste LFP material, including: S1. adding water to the waste LFP material, controlling a pH thereof at 0.5 to 2.0 and an ORP of the slurry at 0.05 V to 1.2 V, and filtering to obtain a material A; S2. adding sulfuric acid and heating a resulting mixture at 100° C. to 400° C. in the air or an oxygen atmosphere to obtain a material B; S3. adding water to the material B, and stirring and filtering to obtain a material C; S4. controlling a pH of the material C at 9 to 11, and filtering a resulting mixture to obtain a material D; S5. passing the material D through an ion-exchange resin to obtain a material E; and S6. adding the material E to a sodium carbonate solution to react; and collecting a resulting solid to obtain lithium carbonate.

Abstract: Disclosed are an aluminum-based lithium ion-sieve (LIS), and a preparation method and use thereof. The aluminum-based LIS is Li2SO4·2Al(OH)3·nH2O coated with Al(OH)3, where n is 1 to 4. The preparation method includes: reacting an aluminum salt and a lithium salt with an alkali to obtain an adsorbent intermediate LiOH·2Al(OH)3·nH2O; using a dilute sulfuric acid to obtain an aluminum-based lithium adsorbent Li2SO4·2Al(OH)3·nH2O; and filtering out and washing the adsorbent, mixing the adsorbent with a metaaluminate, and adjusting a pH to obtain the Li2SO4·2Al(OH)3·nH2O coated with Al(OH)3. The aluminum-based LIS of the present disclosure has the advantages of high adsorption capacity and prominent stability, and can be used to efficiently recover low-concentration lithium in industrial wastewater. Moreover, the LIS is coated with aluminum hydroxide, which can effectively protect the structure from being corroded.

Abstract: A method for providing automatic suppression of an alert includes receiving a first error associated with a first dataset, the first dataset being among a plurality of datasets in a computer data environment, accessing dependency data that describes a set of dependencies between the first dataset and other datasets, examining the dependency data to automatically identify a second dataset from among the other datasets, the second dataset being a dataset on which the first dataset depends, accessing alert data for the computer data environment to determine whether an active alert for the second dataset provides an indication that the first error is redundant to a second error associated with the second dataset, and upon determining that the first error is redundant, suppressing transmission of the alert and storing data about suppressing transmission in a data structure.

Abstract: The present invention provides a method for equivalent high sampling rate FIR filtering based on FPGA, first, the coefficients h(k) of FIR filter are found by using MATLAB, multiplied by an integer and then rounded for the purpose that the rounded coefficients h(k) can be directly used into a FPGA, then the ADC's output of high data rate fs is lowered by dividing the ADC's output x(n) into M parallel data streams xi(n) of low data rate, and the M×L samples in one clock cycle is obtained by delaying the M parallel data streams xi(n) simultaneously by 1, 2, . . . , L? periods of the synchronous clock, at last, the samples yi(n) of FIR filtering output is calculated according to the samples selected from the M×L samples, and the filtered data y(n) of data rate fs is obtained by putting the samples yi(n) together in ascending order of i. Thus, the continuous FIR filtering of an ADC's output sampled with high sampling rate is realized, while the data rates before and after the FIR filtering are unchanged.

Abstract: The present invention provides a method and apparatus for automatically adjusting the hold-off time of a DSO based on real-time cycle measurements of the system trigger signal: obtaining a cycle sequence by measuring the system trigger signal, the maximum cycle and minimum cycle, then judging the difference of the maximum cycle and minimum cycle: if the difference is greater than a threshold set by user, setting the hold-off time to the maximum cycle, the minimum cycle or the median cycle, then returning; otherwise terminating the adjustment of the hold-off time. At this point, the hold-off time is correctly set. Therefore, the present invention reduces the complexity and time consumption of the hold-off adjustment, and allows the test signal to be quickly and stably displayed on screen of DSO, meanwhile, which makes the trigger adjustment of DSO more convenient.

Abstract: The present invention provides a method and system for oscilloscope triggering. The power spectrum entropy threshold Gp and the singular spectrum entropy threshold Gs are obtained by calculating the averages of the power spectrum entropy Hi and the singular spectrum entropy Ei of the first a waveform data frames respectively. Then, for the waveform data frame xa+1(?) and thereafter, If the power spectrum entropy Hi is greater than power spectrum entropy threshold Gp and the singular spectrum entropy Ei is greater than the singular spectrum entropy threshold Gs, the waveform data frame xi(?) is an abnormal signal, the second trigger occurs, storing and displaying the waveform data frame. Thus the storage and display of abnormal signal is realized.

Abstract: A method for oscilloscope 3D mapping in scan mode. The input signal is acquired using a real-time sampling rate which is Dr times higher, thus more sampling points, i.e. Dr acquired data can be obtained during the time interval between two consecutive horizontal pixels. The Dr acquired data are mapped into a same column of the screen to implement fluorescent waveform display. In addition, to realize the scanning display, a flag X is introduced into the three-dimensional database, when the screen refresh signal arrives, the first Ds acquired data are read out from the unread acquired data in FIFO memory. The three-dimensional database is updated from the flag X, which make the leftmost waveform always be the oldest waveform, the rightmost waveform always be the newest waveform. Thus the 3D mapping is realized in scan mode, letting the DSO have a fluorescent waveform display at slow time-base.

Abstract: Provided are a gas-replenishing and enthalpy-increasing control method, device and apparatus for a two-stage compressor. The method includes: when a gas-replenishing electronic expansion valve needs to be opened, gradually increasing, by a controller, an opening degree of the gas-replenishing electronic expansion valve in a time sequence; after the gas-replenishing electronic expansion valve is opened, acquiring a detected gas-replenishing superheat degree of a two-stage compressor; and adjusting, based on the gas-replenishing superheat degree of the two-stage compressor, the opening degree of the gas-replenishing electronic expansion valve, wherein the gas-replenishing electronic expansion valve is disposed between a medium-pressure liquid storage tank and the two-stage compressor, and when the opening degree of the gas-replenishing electronic expansion valve is not zero, a gaseous refrigerant in the medium-pressure liquid storage tank replenishes gas and increases enthalpy for the two-stage compressor.

Abstract: The present invention provides a temperature-compensated crystal oscillator based on digital circuit, a closed-loop compensation architecture is employed to realize the high precision compensation of the crystal oscillator. The output frequency f(T) of the TCXO to be compensated is directly connected with the compensation voltage Vc(T) in real time, and the compensation voltage is fed back to the voltage control terminal of the VCXO to be compensated to compensate, so that the output frequency after compensation is equal to the target frequency signal, thus avoiding the frequency shift of output signal caused by temperature hysteresis, i.e. the discrepancy between the temperature acquired by a temperature sensor and the real temperature of the resonant wafer in the prior art.