Abstract: A cache management method, a solid state drive controller, and a solid state drive are provided. The solid state drive comprises a cache space, and the cache space comprises a dirty data block linked list. The method comprises: obtaining a write command and generating a first dirty data block used to record data information of the write command; and if the first dirty data block conflicts in address range with a second dirty data block in the dirty data block linked list, marking data in the conflicting region of the second dirty data block as invalid and inserting the first dirty data block into the dirty data block linked list.

Abstract: The present invention relates to a positive electrode material comprising a core material and a coating layer coated on the surface of the core material, the core material comprises nickel hydroxide, and the coating layer comprises a tetravalent cobalt compound; and based on the weight of the coating layer, the content of the tetravalent cobalt compound is no less than 45 wt %. The present invention also relates to a preparation method for the positive electrode material. The present invention further relates to an alkaline secondary battery containing the positive electrode material.

Abstract: Disclosed is a method for enhancing service quality of a solid state drive and the solid state drive, and the method includes the steps of obtaining a remaining storage resource corresponding to a write I/O request periodically, and determining a resource waiting time of the write I/O request based on a resource consumption rate of the write I/O request. The method also includes setting a maximum scheduling delay time for the write I/O request according to the resource waiting time of the write I/O request. The method also includes identifying a type of unprocessed I/O requests and obtaining an arrival time of the unprocessed I/O requests, and sorting the unprocessed I/O requests in combination with the maximum scheduling delay time. The method further includes processing the unprocessed I/O requests according to the sort of the unprocessed I/O requests.

Abstract: The present invention provides a liquid crystal composition and a liquid crystal display device thereof. The liquid crystal composition comprises at least one compound of general formula I and at least one compound of general formula II. The liquid crystal composition has a larger vertical dielectric constant (??), a larger ratio of the vertical dielectric constant to the absolute value of dielectric anisotropy (??/|??|), a larger Kave value and a higher transmittance while maintaining an appropriate clearing point, an appropriate optical anisotropy, and an appropriate absolute value of the dielectric anisotropy, such that the liquid crystal display device comprising the same has a better contrast, a faster response speed and a better transmittance while maintaining an appropriate range of operating temperature and an appropriate threshold voltage.

Abstract: A data recovery method for a storage medium, a data recovery system, and a related device are provided. The method includes: when a write failure occurs during writing data into the storage medium, extracting original data corresponding to the data failed to be written and original verification data in an original RAID stripe to which the original data belongs; obtaining new verification data by performing calculation on the original data and the original verification data by using a preset verification algorithm; forming a new RAID stripe by using valid data other than the original data in the original RAID stripe and the new verification data, and recording data relations in the new RAID stripe; and when a reading failure occurs during reading the data in the new RAID stripe, recovering, according to the data relations in the new RAID stripe, the data failed to be read.

Abstract: A liquid crystal composition includes at least one compound of general formula F and at least one compound of general formula N. A liquid crystal display device includes the liquid crystal composition. The liquid crystal composition has a larger K value, a smaller rotational viscosity, a higher VHR value, a longer low temperature storage time and a shorter response time while maintaining an appropriate clearing point, an appropriate optical anisotropy, and an appropriate absolute value of dielectric anisotropy, such that the liquid crystal display device including the liquid crystal composition has a better contrast, a wider temperature range for application, a faster response speed, a better contrast and a higher reliability.

Abstract: A liquid crystal composition includes at least one compound of general formula F and at least one compound of general formula N. A liquid crystal display device includes the liquid crystal composition. The liquid crystal composition has a larger K value, a smaller rotational viscosity, a higher VHR value, a longer low temperature storage time and a shorter response time while maintaining an appropriate clearing point, an appropriate optical anisotropy, and an appropriate absolute value of dielectric anisotropy, such that the liquid crystal display device including the liquid crystal composition has a better contrast, a wider temperature range for application, a faster response speed, a better contrast and a higher reliability.

Abstract: A data recovery method for a storage medium, a data recovery system, and a related device are provided. The method includes: when a write failure occurs during writing data into the storage medium, extracting original data corresponding to the data failed to be written and original verification data in an original RAID stripe to which the original data belongs; obtaining new verification data by performing calculation on the original data and the original verification data by using a preset verification algorithm; forming a new RAID stripe by using valid data other than the original data in the original RAID stripe and the new verification data, and recording data relations in the new RAID stripe; and when a reading failure occurs during reading the data in the new RAID stripe, recovering, according to the data relations in the new RAID stripe, the data failed to be read.

Abstract: A data recovery method, an apparatus, and a solid state drive are provided. The method includes: copying, after an abnormality occurs in the solid state drive, memory data of a first memory space to a solidified area of a second memory space, and then writing address information of the solidified area to a third memory space; recovering, after a controller is reset for the first time, the memory data of the first memory space according to the address information of the solidified area; flushing data of the second memory space into a flash memory space according to the recovered memory data of the first memory space; and performing, after the controller is reset for the second time, data recovery on the solid state drive according to memory data of the flash memory space.

Abstract: One or more systems and methods according to the present disclosure may apply a model for integrating distribution systems having proliferated distributed energy resources into the independent system operator energy market, particularly when one or more distribution systems are connected to a transmission system via multiple interconnection buses. Additionally, systems and methods for applying a compact multi-port model for power exchanges and associated bidding strategies are described. A the multi-port power exchange model may be constructed based on the operational feasible region of a distribution system; describing physical operation characteristics of distributed energy resources, flexible loads, and the distribution network; and the bidding strategy model may describe total operating cost of the distribution system, while recognizing electrically coupled injections of multiple interconnection buses.

Abstract: Disclosed is a method for enhancing service quality of a solid state drive and the solid state drive, and the method includes the steps of obtaining a remaining storage resource corresponding to a write I/O request periodically, and determining a resource waiting time of the write I/O request based on a resource consumption rate of the write I/O request. The method also includes setting a maximum scheduling delay time for the write I/O request according to the resource waiting time of the write I/O request. The method also includes identifying a type of unprocessed I/O requests and obtaining an arrival time of the unprocessed I/O requests, and sorting the unprocessed I/O requests in combination with the maximum scheduling delay time. The method further includes processing the unprocessed I/O requests according to the sort of the unprocessed I/O requests.

Abstract: A method and system for binding and verifying between a storage device and hosts are provided. The method includes: sharing system parameters in advance with the hosts by the storage device, where the hosts are to be bound to the storage device; using a programmable read-only memory as the storage device, dividing the programmable read-only memory into m regions, completing the binding between each region and one corresponding host to be bound using the pre-shared system parameters, where m is a positive integer; verifying an identity of a bound host in accordance with the pre-shared system parameters through a zero-knowledge proof method by the storage device; if the verification is successful, starting the storage device and serving the bound host; if the verification is unsuccessful, terminating the starting of the storage device and refusing to serve the bound host.

Abstract: Disclosed is a method and system for binding and verifying between a storage device and hosts. The method for verifying a storage device and a host comprises: sharing system parameters in advance with the host by the storage device, wherein the host is to be bound to the storage device; using programmable read-only memory as the storage device, dividing the programmable read-only memory into m regions, completing the binding between each region and one corresponding host to be bound by using the pre-shared system parameters, wherein m is positive integer; verifying the identity of the bound host in accordance with the pre-shared system parameters through zero-knowledge proof method by the storage device; if the verification is successful, starting the storage device and serving the bound host; if the verification is unsuccessful, terminating the starting of the storage device and refusing to serve the bound host.

Abstract: The present invention provides a liquid crystal composition, comprising, 14-30% of one or more compounds of general Formula I, 8-30% of one or more compounds of general Formula II, 13-58% of one or more compounds of general Formula III, and 20-65% of one or more compounds of general Formula IV, on the basis of the total weight of the liquid crystal composition. The liquid crystal composition of the present invention has a higher retardation, a higher transmittance, a larger optical anisotropy, a proper clearing point, a lower rotational viscosity and a good low-temperature storage stability, and is applicable to liquid crystal display devices to meet the rapid response required by a liquid crystal display, and ensure good display of the liquid crystal display in a harsh environment.

Abstract: An authentication device is provided that authenticates an electronic device based on the responses from distinct types of physically unclonable functions. The authentication device receives a device identifier associated with the electronic device. It then sends one or more challenges to the electronic device. In response, the authentication device receives one or more responses from the electronic device, the one or more responses including characteristic information generated from two or more distinct types of physically unclonable functions in the electronic device.

Abstract: Techniques for operating a computer system for a vehicle are provided. An example method according to these techniques includes observing usage of at least one component of the computer system by an application to generate an application usage log for the application, deriving behavior vectors from the application usage log, determining whether the application is a distracting application by comparing the behavior vectors to one or more application safety rules, and limiting execution of the application responsive to determining that the application is a distracting application and based on status information associated with the vehicle.

Abstract: One feature pertains to generating a unique identifier for an electronic device by combining static random access memory (SRAM) PUFs and circuit delay based PUFs (e.g., ring oscillator (RO) PUFs, arbiter PUFs, etc.). The circuit delay based PUFs may be used to conceal either a challenge to, and/or response from, the SRAM PUFs, thereby inhibiting an attacker from being able to clone a memory device's response.

Abstract: One feature pertains to a computing device that includes an input interface, a communication interface, and a processing circuit that is adapted to receive a request from an application to authorize an action and generate a dynamic access code associated with the action. The processing circuit also transmits a message to a secondary display device that includes information data associated with the action and the dynamic access code for display on a display of the secondary display device. The processing circuit authorizes the action received from the application if the dynamic access code is entered into the input interface. Multiple, unique dynamic codes may also be associated with different actions the application may make requests for, which are also transmitted to the secondary display device for display.

Abstract: Techniques for operating a computer system for a vehicle are provided. An example method according to these techniques includes observing usage of at least one component of the computer system by an application to generate an application usage log for the application, deriving behavior vectors from the application usage log, determining whether the application is a distracting application by comparing the behavior vectors to one or more application safety rules, and limiting execution of the application responsive to determining that the application is a distracting application and based on status information associated with the vehicle.

Abstract: A database for location or geographic based services is secured by requiring location based requests to include a unique identifier that identifies the location as well as an authorization identifier associated with the location. The authorization identifier is information that is obtained by being physically present at the location, such as information from access points that are at the location or a position fix when present at the location. The authorization identifier may be non-unique but relatively time-invariant, making such information easily crowdsourced, but difficult to obtain unless physically present at the location. For example, the authorization identifier may be an SSID or a Beacon Frame, or a hash thereof from one or more devices at the location or a position fix.