Abstract: The present disclosure discloses a two-layered varied ball diameter packed bed heat storage apparatus and a method of manufacturing a heat storage ball. By arranging large-diameter heat storage balls at an upper layer of a packed bed heat storage apparatus and small-diameter heat storage balls at a lower layer thereof; the packed bed heat storage structure comprehensively considers two important evaluation indicators for a heat storage apparatus: heat storage rate and heat storage density, thereby implementing a design principle of maximizing the heat storage rate density of the packed bed heat storage apparatus; by achieving a best combination of heat storage ball diameters inside the packed bed through an optimized design, the heat storage apparatus is imparted with a best heat storage performance. The present disclosure further provides a method of manufacturing a heat storage ball.

Abstract: Disclosed are a resistor, a heat dissipater and a combinatory device of the resistor and the heat dissipater, and relates to the field of power electronics. The resistor is cylindrical, and comprises a metal end, an insulating part, a casing, metal bars, a resistor wire, thermally conductive insulating fillers and a metal connection mechanism. The metal connection mechanism of the resistor and the heat dissipater are connected by means of direct contact. The structure and the connection method can shorten the length of the resistor, completely insulate the electrical circuits of the resistor from the possible leakage of the water inlet- and outlet-pipe of the heat dissipater, and enable the combinatory device of the resistor and the heat dissipater to be structurally more compact and the connections thereof cleaner.

Abstract: An electronic bill management method performed in an electronic bill management system is provided. A bill issuance request of a first user including original bill information is received. A first bill account corresponding to the first user is generated based on the original bill information, and account information of the first bill account is stored to an account table in the electronic bill management system. A second block is generated based on the bill issuance request, the first bill account, and a block header eigenvalue of a first block in a block chain in the electronic bill management system. The first block is a previous block of the second block in the block chain, and a bill issuance event of the first user is recorded based on the second block. An issuance success message is transmitted to the first user, the issuance success message including the first bill account.

Abstract: Systems and methods including one or more processors and one or more non-transitory computer-readable media having computing instructions that are configured to run on the one or more processors and perform acts of receiving a test set comprising potential candidate items for substitution for a target item, determining association scores for each of the potential candidate items in the test set, determining one or more semantic similarity features of the potential candidate items in the test set, determining one or more image similarity features of the potential candidate items in the test set, and creating a substitutive probability model by determining a relative contribution of each of the association scores, the semantic similarity features and the image similarity features to a substitutive probability for the potential candidate items in the test set, with reference to a baseline set of the potential candidate items. Additional embodiments are disclosed herein.

Abstract: An online system manages data by determining relevance of data dimensions to users. The online system determines which data dimensions a user is likely to be interested in. If a user requests to access a data set that includes data of different dimensions, the online system analyzes the dimensions' relevance to the user before providing the data set to the user. The online system provides the data to the user by prioritizing data dimensions that are more relevant to the user. As such, the online system improves the user experience by allowing users to conveniently and quickly locate relevant data and minimizing the distraction caused by irrelevant data. The online system may create and provide a user interface to present data dimensions that are determined to be relevant.

Abstract: A method for processing account information in a block chain is provided. A computer device receives identity information and a transfer request, the transfer request requesting to transfer a resource in an account to a target account, the target account being generated by a certificate center. The computer device obtains owner information of the account from the certificate center according to the transfer request. The computer device compares the identity information and the owner information. The computer device transmits an authentication request to the block chain in response to determining that the identity information and the owner information are consistent, the authentication request requesting the block chain to transfer the resource in the account to the target account.

Abstract: A light source module comprises a substrate at an inner side of a fixing plate, a heat dissipation plate at an inner side of the substrate, a fixing base at an inner side of the heat dissipation plate, a positive and a negative electrode elastic element. The substrate is connected with an illuminate element and formed with a positive and a negative electrode connecting portion for respectively connecting to the positive and negative electrodes of the illuminate element. The positive and negative electrode elastic elements are sleeved at the fixing base and respectively formed with a positive and a negative electrode pin to connect to the positive and negative electrode connecting portions. Accordingly, assembly is easier and more convenient, bad connection or short circuit does not occur, and inner resistance and the power consumption are decreased.

Abstract: Methods and compositions for use in the preparation of MOF-based non-PGM electrocatalysts including combining transition metal compounds with organic ligands and secondary building units to create a solid mixture, heating the solid mixture to form a MOF through a solid-state reaction, optionally heating the MOF to convert it to an electrocatalyst via pyrolysis, and optionally post-treating. The electrode catalysts may be used in various electrochemical systems, including a proton exchange membrane fuel cell.

Abstract: A nano-emulsion composition having a small particle size and ultra-low concentration and a preparation method thereof is disclosed. The raw materials of the composition comprise, in terms of percentage by weight, 0.002% to 0.2% of a polymer-containing homogeneous microemulsion, water, and 99.998% to 99.8% of an organic salt solution or inorganic salt solution. The composition is prepared by diluting a polymer-containing homogeneous microemulsion with water or a salt solution. The polymer-containing homogeneous microemulsion is formed by mixing the following raw materials, in terms of percentage by weight: 8% to 40% of a surfactant, 0.5% to 10% of a polymer, 10% to 30% of an alcohol, 3% to 30% of an oil, 0% to 20% of a salt, and balance of water. The composition of the invention is low in concentration, low in cost, narrow in particle size distribution, good in stability, simple in preparation, and convenient for storage and use.

Abstract: Systems and methods including one or more processing modules and one or more non-transitory storage modules storing computing instructions configured to run on the one or more processing modules and perform acts of obtaining a uniform resource locator (URL) of a first webpage that is shown on a graphical user interface and that is external to a website of a retailer (where, in some embodiments, the URL is obtained from a referral website or is entered by a user from a chat window or search box), using a web scraper to extract web text displayed on the first webpage on the graphical user interface, processing the web text displayed on the first webpage on the graphical user interface to determine an interest of a user, using a set of rules to determine items related to the web text displayed on the first webpage on the graphical user interface, and coordinating displaying the items on a second webpage to promote the items as related to the interest of the user, where the second webpage is internal or external

Abstract: Embodiments of the present disclosure relate to a method, a device and a computer program product for managing a distributed system. The method comprises sending heartbeat messages from a master node to a plurality of slave nodes, the master node and the plurality of slave nodes being included in a plurality of nodes in the distributed system, and the plurality of nodes being divided into one or more partitions. The method further comprises, in response to receiving a response to the heartbeat messages from a portion of slave nodes in the plurality of slave nodes, determining respective states of the one or more partitions. In addition, the method further comprises a state of a first slave node in the plurality of slave nodes at least based on the respective states of the one or more partitions, the master node failing to receive a response to the heartbeat messages from the first slave node.

Abstract: A GaN transistor with polysilicon layers for creating additional components for an integrated circuit and a method for manufacturing the same. The GaN device includes an EPI structure and an insulating material disposed over EPI structure. Furthermore, one or more polysilicon layers are disposed in the insulating material with the polysilicon layers having one or more n-type regions and p-type regions. The device further includes metal interconnects disposed on the insulating material and vias disposed in the insulating material layer that connect source and drain metals to the n-type and p-type regions of the polysilicon layer.

Abstract: A method of preparing a nitrogen containing electrode catalyst by converting a high surface area metal-organic framework (MOF) material free of platinum group metals that includes a transition metal, an organic ligand, and an organic solvent via a high temperature thermal treatment to form catalytic active sites in the MOF. At least a portion of the contained organic solvent may be replaced with a nitrogen containing organic solvent or an organometallic compound or a transition metal salt to enhance catalytic performance. The electrode catalysts may be used in various electrochemical systems, including an alkaline fuel cell.

Abstract: A method for curating documents, executed by a computer, includes detecting one or more themes in a document, identifying one or more user interests for a user, presenting a ranked list of the one or more themes to the user, and dynamically updating the ranked list based on user feedback. The ranked list may be ranked according to the one or more user interests. A computer program product and computer system corresponding to the above method are also disclosed herein.

Abstract: A method for curating documents, executed by a computer, includes detecting one or more themes in a document, identifying one or more user interests for a user, presenting a ranked list of the one or more themes to the user, and dynamically updating the ranked list based on user feedback. The ranked list may be ranked according to the one or more user interests. A computer program product and computer system corresponding to the above method are also disclosed herein.

Abstract: A electrochemical or other sensor interface circuit architecture can deliver substantial DC offset bias to an electrochemical or other sensor separately or independently from delivering a time-varying AC excitation signal, which can then be provided with higher resolution, which, in turn, can allow better resolution of the measured response signal providing the impedance characteristic of sensor condition. For example, a differential time-varying AC excitation signal for the sensor condition characteristic can be delivered separately and independently from a differential stable (e.g., DC or other) bias signal, such as by using separate digital-to-analog converters (DACs), so that providing the more stable signal does not limit the resolution and accuracy of the time-varying signal, such as by using up the dynamic range of a single DAC.

Abstract: Low-power touch detection can be beneficial for an electronic device to maintain touch detection and enable response to certain touch inputs in a low-power state (e.g., a sleep state), while consuming less power than touch detection during an awake state. For example, sensing touch during the sleep state can allow the electronic device to wake (e.g., transition from the sleep state to the awake state) in response to detecting a certain touch input (e.g., a tap or other touch input) on its touch screen while in the sleep state. Examples of the disclosure provide various ways for the electronic device to further reduce power consumption in the low-power state by simplifying the processing requirements for touch input to the touch-sensitive surface.

Abstract: The present invention relates to a downhole drilling tool system of torque self-balancing and belongs to a technical field of drilling engineering equipment. The drilling tool system consists of an assembly of internal and external drill bits, power components, a pressure adjustment system for internal and external drill bits, a mud circulating system, and an unfreezing system.

Abstract: Embodiments of the invention provide a method, system and computer program product for the dynamic adjustment of a service level agreement (SLA) for a hosted computing environment based upon application capabilities. The method includes specifying in a user interface to the hosted computing environment one or more application components of an application to be hosted within the hosted computing environment. Thereafter, a resource utilization capability is determined for one of the components and a set of resource utilization options for an SLA for the application is filtered based upon the resource utilization capability of the component or components. One of the filtered set of options can be selected and the application is executed in the hosted computing environment. Finally, the utilization of resources accessible to the application is managed based upon the SLA during the execution of the application in the hosted computing environment.

Abstract: Embodiments of the invention provide a method, system and computer program product for the dynamic adjustment of a service level agreement (SLA) for a hosted computing environment based upon application capabilities. The method includes specifying in a user interface to the hosted computing environment one or more application components of an application to be hosted within the hosted computing environment. Thereafter, a resource utilization capability is determined for one of the components and a set of resource utilization options for an SLA for the application is filtered based upon the resource utilization capability of the component or components. One of the filtered set of options can be selected and the application is executed in the hosted computing environment. Finally, the utilization of resources accessible to the application is managed based upon the SLA during the execution of the application in the hosted computing environment.