Abstract: A system for calibrating an equipment, the system including a beam splitter; a first reticle configured to be removably attached to the equipment; and an image capture device including an image plane, wherein an image of the first reticle is configured to be received by way of the beam splitter at the image plane along an optical axis of the beam splitter, wherein the orientation as indicated by the first reticle is compared to an orientation of the image plane and if the orientation as indicated by the first reticle differs from the orientation of the image plane, the equipment is rotated about the optical axis of the beam splitter such that the orientation as indicated by the first reticle matches the orientation of the image plane.

Abstract: A system for providing two parallel light beams spaced-apart a selectable distance, the system including: a first beam splitter configured for reflecting a light beam from a light source to create a first datum light beam, the first beam splitter is fixedly attached to a base; a second beam splitter configured for reflecting a transmitted light beam from the light beam from the light source to create a second datum light beam, a third beam splitter configured for reflecting a transmitted light beam from the light beam from the light source to create a third datum light beam, a fourth beam reflecting device configured for reflecting a transmitted light beam from the light beam from the light source to create a fourth light beam. Each of the second, third beam splitters and fourth beam reflecting device is configured to be slidingly attached to the base.

Abstract: The electronic device includes a composite antenna including a slot antenna and a wire antenna. A first strip-shaped conductor of the slot antenna includes a first ground part, a second ground part, and a feeding part. The first ground part and the second ground part are respectively two ends of the first strip-shaped conductor. The feeding part is located between the first ground part and the second ground part. A second strip-shaped conductor of the wire antenna includes a first end and a second end. The first end of the second strip-shaped conductor is electrically connected to the first ground part. The second end of the second strip-shaped conductor is an open end.

Abstract: A given policy file is obtained at a publishing node of a decentralized system of nodes, wherein the given policy file defines a policy that applies to at least a subset of nodes in the decentralized system of nodes. The given policy file is sent to a decentralized storage network for storage therein. Storage metadata is received from the decentralized storage network, wherein the storage metadata represents address information associated with storage of the given policy file in the decentralized storage network. The publishing node generates policy file retrieval metadata based on the storage metadata received from the decentralized storage system. The policy file retrieval metadata is sent to a blockchain network for storage therein. One or more querying nodes of the decentralized system of nodes access the blockchain network to obtain the policy file retrieval metadata in order to then retrieve the policy file from the decentralized storage network.

Abstract: Embodiments of the present disclosure relate to a method for storage management, an electronic device, and a computer program product. According to an example implementation of the present disclosure, a method for storage management is provided, which comprises receiving an access request for target metadata from a user at a node among a plurality of nodes included in a data protection system, wherein the access request includes an identification of the target metadata; based on the identification, acquiring target access information corresponding to the identification from a set of access information for the user, wherein the target access information records information related to access to the target metadata; and if the target access information is acquired, determining the target metadata based on the target access information.

Abstract: The present disclosure relates to a method, device and computer program product for processing a job. In a method, a first group of tasks in a first portion of a job are obtained based on a job description of the job from a client. The first group of tasks are allocated to a first group of processing devices in a distributed processing system, respectively, so that the first group of processing devices generate a first group of task results of the first group of tasks, respectively, the first group of processing devices being located in a first processing system based on a cloud and a second processing system based on blockchain. The first group of task results of the first group of tasks are received from the first group of processing devices, respectively. A job result of the job is generated at least partly based on the first group of task results.

Abstract: An antenna structure including a slot antenna and a wire antenna is disposed, and the antenna structure is excited to generate four antenna modes: a common mode slot antenna, a differential mode slot antenna, a common mode wire antenna, and a differential mode wire antenna in a symmetric feed manner and an anti-symmetric feed manner.

Abstract: A data manager includes persistent storage and a data register. The persistent storage stores an identity chain and a data availability chain. The data register obtains data associated with an entity registered with the identity chain using a public key associated with the entity; obtains an object identifier associated with the data by storing the data in a data storage as a record; and records, on the data availability chain, both of: the record using a private key associated with the entity, and the object identifier.

Abstract: A colorimeter configured to receive central rays and marginal rays, the colorimeter including an image sensor configured for receiving the central rays to produce a first image; a spectrometer configured for receiving the marginal rays to produce a second image; and at least one optical device configured to reflect at least a portion of the marginal rays through a light path to the spectrometer, wherein the first image and the second image are aggregated to produce a total image that is more extensive than the first image.

Abstract: Embodiments of the present disclosure provide a method, an electronic device, and a computer program product for data indexing. The method for data indexing includes obtaining a plurality of data blocks for storage. The method further includes generating a plurality of vectorized representations of the plurality of data blocks so that a difference between vectorized representations of data blocks with a higher similarity among the plurality of data blocks is smaller. The method further includes storing the plurality of vectorized representations for indexing the plurality of data blocks respectively. The vectorized representations serve as indexes of the data blocks, and the vectorized representations may be used to effectively measure similarities between the data blocks, thereby providing the possibility of performing a fuzzy search of the data blocks based on the similarities.

Abstract: A wireless charging method applied to a power supply device, the method includes: negotiating charging parameters with a plurality of target power receiving devices, the target power receiving devices being: devices determined to receive wireless charging from the power supply device; selecting charging parameters supported by both the plurality of target power receiving devices and the power supply device as target parameters; and utilizing a first coil to wirelessly charge the plurality of target power receiving devices according to the target parameters.

Abstract: A data management method comprises: receiving, at a first node of a plurality of nodes for collaboratively data processing, a request to perform a target operation at the first node from a second node of the plurality of nodes; obtaining a privilege of the second node from a third node of the plurality of nodes; determining a threshold privilege for performing the target operation based on a type of the target operation; and performing the target operation in accordance with a determination that the privilege of the second node is higher than the threshold privilege. In this manner, the security of data may be improved.

Abstract: Embodiments of the present disclosure relate to a method for storage management, an electronic device, and a computer program product. According to an example implementation of the present disclosure, a method for storage management is provided, which comprises receiving an access request for target metadata from a user at a node among a plurality of nodes included in a data protection system, wherein the access request includes an identification of the target metadata; based on the identification, acquiring target access information corresponding to the identification from a set of access information for the user, wherein the target access information records information related to access to the target metadata; and if the target access information is acquired, determining the target metadata based on the target access information.

Abstract: In a multi-cloud computing environment comprising a plurality of cloud platforms with each cloud platform comprising one or more nodes, a method maintains a decentralized metadata database framework, wherein each node comprises a decentralized metadata database component operatively coupled to each other decentralized metadata database component of the framework and wherein each of at least two of the decentralized metadata database components stores a set of metadata records corresponding to protected data stored across the plurality of cloud platforms. Further, the method manages one or more access requests directed to the protected data through one or more of the decentralized metadata database components of the framework.

Abstract: An antenna design solution is provided. A metal frame and a PCB ground layer of an electronic device are used to form a slot. Through symmetric feeding and anti-symmetric feeding, the slot can be excited to generate two slot antenna patterns: a CM slot antenna pattern and a DM slot antenna pattern. In addition, the two slot antenna patterns share a same slot antenna radiator.

Abstract: This invention generally provides composition for making a polyurethane foam with reduced aldehyde emission and more specially to composition useful in means of transport such as interior part of cars, wherein composition is comprising: (a) a polyfunctional isocyanate; (b) an isocyanate reactive composition; and (c) a compound of the formula (I) or (II), wherein the compound (c) is present by weight percentage in the composition in an amount ranging from about 0.001 to about 10, preferably from about 0.01 to about 5, and more preferably from about 0.05 to about 2 based on the total weight of the composition. The compositions can reduce aldehyde emission, especially acetaldehyde emission in the PU foam and has no obvious influence on the mechanic properties of the foam.

Abstract: A wireless charging positioning device and method, a receiver and a storage medium are provided. The device is applied to a transmitter and includes: at least one group of detection coils and at least one processor. Each group of detection coils includes N detection coils, detection regions covered by different detection coils are at least partially different, detection coil is configured to transmit a detection signal and receive a feedback signal sent by a receiver, and N is a positive integer greater than or equal to 2. The at least one processor is connected with the N detection coils and configured to determine a position region of the receiver at the transmitter according to the feedback signals received by the N detection coils.

Abstract: In an antenna design, a metal frame of an electronic device and a printed circuit board (PCB) form a slot antenna radiator, where two common mode (CM) slot antenna modes of the slot antenna radiator are excited through anti-symmetrical feeding, so that when dual resonances and wideband coverage are implemented, specific absorption ratio (SAR) values in the two CM slot antenna modes are close.

Abstract: A method for locating a center of a field of view of an optical element using a system having a surface disposed at a first illumination, an image receiver, a blocker disposed at a second illumination, the method including disposing the blocker at, at least one location in the field of view upon the surface in a first direction when the brightness of an image within the field of view of the optical element is disposed at a brightness and recording a first location of the blocker; repeating the disposing step in a second direction and at the brightness, wherein the second direction is opposite the first direction and each of the first direction and the second direction is parallel to the surface; and averaging the first location and the second location to yield the center of the field of view of the optical element in the first direction.

Abstract: Embodiments of the present disclosure relate to a method, an electronic device, and a computer program product for processing information. According to an example embodiment, the method includes: acquiring a service request record set, each service request record in the service request record set relating to a problem encountered by a user when the user is provided with a service and a solution to the problem; constructing a language model based on a first subset in the service request record set and an initial model, the initial model being trained using a predetermined corpus and configured to determine vector representations of words and sentences in the corpus; and constructing a classification model based on a second subset in the service request record set and the language model, the classification model being capable of determining a solution to a pending problem, and the first subset being different from the second subset.