Abstract: A Fe—Co hybrid catalyst for oxygen reaction reduction was prepared by a two part process. The first part involves reacting an ethyleneamine with a cobalt-containing precursor to form a cobalt-containing complex, combining the cobalt-containing complex with an electroconductive carbon supporting material, heating the cobalt-containing complex and carbon supporting material under conditions suitable to convert the cobalt-containing complex and carbon supporting material into a cobalt-containing catalyst support. The second part of the process involves polymerizing an aniline in the presence of said cobalt-containing catalyst support and an iron-containing compound conditions suitable to form a supported, cobalt-containing, iron-bound polyaniline species, and subjecting said supported, cobalt-containing, iron bound polyaniline species to conditions suitable for producing a Fe—Co hybrid catalyst.

Abstract: Embodiments of the invention are related to systems for interfacing with implantable medical devices, amongst other things. In an embodiment, the invention includes an external medical system including a processor and a telemetry circuit in communication with the processor, the processor configured to communicate with an implanted medical device. The system can be configured to query a system user after a first period of time in which indicators of system use are not detected. The system can be further configured to deactivate one or more data transmission features of the implanted medical device after a second period of time in which one or more indicators of system use are not detected. Other embodiments are also included herein.

Abstract: An authentication method includes sensing, pressure information through a touch screen. The pressure information includes a pressing strength value of a pressed contact when a user presses the touch screen. The sensed pressure information is compared with an authentication password by using the sensed pressure information as an authentication password. If the sensed pressure information matches the stored authentication password, it is determined that password authentication succeeds; otherwise, the password authentication fails.

Abstract: In accordance with an example embodiment of the present invention, an apparatus, comprising at least one processor; and at least one memory including computer program code, the at least one memory and the computer program code configured to, with the at least one processor, cause the apparatus to perform at least the following: select at least two relay stations from a plurality of relay stations; determine a transmission mode for cooperatively forwarding a data packet by the selected relay stations; schedule a resource allocation for the selected relay stations based at least in part on the transmission mode; and notify the selected relay stations of the resource allocation, is disclosed.

Abstract: A high-resolution biosensor for analysis of biomolecules is provided. The high-resolution biosensor comprises a functional unit comprising a conducting material with an atomic-scale thickness and a micro-nano fluidic system unit. The functional unit is capable of achieving a resolution required to detect a characteristic of individual biomolecule, and the micro-nano fluidic system unit is capable of controlling the movement and conformation of the biomolecule investigated. The functional unit comprises a first insulating layer, conducting functional layer, a second insulating layer, and a nanopore extending through the full thickness of the functional unit. The micro-nano fluidic system unit comprises a first electrophoresis electrode or micropump, a first fluidic reservoir, a second fluidic reservoir, a second electrophoresis electrode or micropump, and micro-nanometer separation channels. The nanopore connects to the micro-nanometer separation channels.

Abstract: The present invention provides a transmission method and apparatus for cancelling inter-carrier interference in wireless communication systems. Particular carriers are not used for data transmission but carry weighted data to cancel the ici interference of a first group of interfering sub-carriers onto a second group of victim sub-carriers. The weights are inversely proportional to the frequency offset between the interfering sub-carriers and the victim sub-carriers.

Abstract: The present disclosure provides a motherboard testing apparatus and method. The motherboard testing method includes following steps. A motherboard testing apparatus is provided. The testing computer and the testing device are electrically connected to a motherboard. The testing computer runs an operating system based on the motherboard. The testing computer receives an input testing times and sends the input testing times and a running signal to the testing device. The testing device powers off the motherboard, reduces the input testing times by 1 to a current testing times after a period of determined time, and powers on the motherboard after determining that the current testing times is greater than 0.

Abstract: Provided are a graphene powder, a production method thereof, and an electrochemical device comprising the same. The graphene powder has an elemental ratio of oxygen atoms to carbon atoms of not less than 0.07 and not more than 0.13 and an elemental ratio of nitrogen atoms to carbon atoms of not more than 0.01. In the production method, the graphene powder is produced by using a dithionous acid salt as a reducing agent. Since the graphene has a low content of nitrogen atoms and a proper amount of oxygen atoms and a proper defect, the graphene is provided with good performance of both dispersibility and conductive property, and is usable as a good conductive additive, such as the one for a lithium ion battery electrode. The production method has the advantages of low cost, high efficiency and low toxicity.

Abstract: An exemplary discharge test circuit for testing whether there is current on a circuit board includes a comparison module, a switch module, a control module and a display module. The comparison module receives a first direct current (DC) voltage from the circuit board, compares the first DC voltage with a reference voltage, and outputs a switch signal according to a result of the comparison. The switch module receives the switch signal, and output a control signal accordingly. The control module receives the control signal, determines a status of the circuit board according to the control signal, and outputs a display signal corresponding to the status of the circuit board. The display module receives the display signal, and displays whether there is current on the circuit board according to the display signal.

Abstract: A power on and off testing device includes a control module, a switch module, an alternating current and direct current converter module, an input module, and a detecting module. The switch module is connected to an alternating current source. The alternating current and direct current converter module is connected to a motherboard of a computer. The input module is connected to the control module to input testing references to the control module. The detecting module is connected between the control module and the motherboard. The detecting module detects a power status of the motherboard and sends the power status to the control module. The control module controls the switch module to be switched on according to the power status after receiving the testing references, thereby controlling the alternating current source to supply power to the motherboard.

Abstract: A method for wireless communication between a base station and a plurality of subscriber stations is described wherein a communication capacity is partitioned in resource units at least by code multiplexing, which resource units are distributed by the base station over said devices, wherein data from each subscriber station is spread by means of a signature sequence, characterized in that multiple resource units assigned to a common subscriber station have the same signature sequence.

Abstract: A process for preparing a durable non-precious metal oxygen reduction electrocatalyst involves heat treatment of a ball-milled mixture of polyaniline and multiwalled carbon nanotubes in the presence of a Fe species. The catalyst is more durable than catalysts that use carbon black supports. Performance degradation was minimal or absent after 500 hours of operation at constant cell voltage of 0.40 V.

Abstract: The present invention provides a transmission method and apparatus for cancelling inter-carrier interference in wireless communication systems. Particular carriers are not used for data transmission but carry weighted data to cancel the ici interference of a first group of interfering sub-carriers onto a second group of victim sub-carriers. The weights are inversely proportional to the frequency offset between the interfering sub-carriers and the victim sub-carriers.

Abstract: A concrete structure member strengthened with prestressed FRP elements includes a concrete structure body and a prestressed FRP element arranged on the former. An epoxy resin overlay surrounding the prestressed FRP element is provided to wrap it up, and a polymer concrete supplemental layer is provided outside the epoxy resin overlay. The concrete structure member can uniformly and effectively transfer the stress from the prestressed FRP element.

Abstract: An energy-saving optimized control system for a chiller plant room comprises an industry control computer (1), a flow sensor (4), a temperature sensor (5), an outdoor temperature and humidity sensor (6), a three-phase active power transmitter (7), a water pump variable speed driver (9) and a cooling tower fan variable speed driver (10), which are respectively connected with a programmable controller (2), wherein the programmable controller (2) communicates with the industrial control computer (1) through an industrial Ethernet; and an RS485 communication interface module (3) is connected with chillers and communicates with the industrial control computer (1) through a ModBus protocol. An energy-saving optimized control method for a chiller plant room is also provided.

Abstract: Operating a wireless communications system that supports multi-user multiple-input multiple-output (MU-MIMO) communications between a base station and multiple mobile stations involves generating a channel estimation, predicting a future channel estimation from the channel estimation, precoding data in response to the predicted future channel estimation, and transmitting the precoded data.

Abstract: A monitor for determining the operation condition of at least one cable that suffers bending and/or twisting and constitutes an electrical loop and a method thereof are provided. The monitor comprises a test electrical signal generator (5) for generating an identifiable test electrical signal and injecting the test electrical signal into the first point of the at least one cable, a test electrical signal filter (7) adapting to extract the injected test electrical signal from the second point of the at least one cable, and a comparator (8) for comparing a predetermined threshold with the difference between the electrical state of the injected test electrical signal and the extracted test electrical signal and producing a warning signal indicating cable fatigue when the difference exceeds the predetermined threshold.

Abstract: According to one embodiment, a method for transmission/reception contention resolution in D2D communication is provided. The method includes detecting, at a device-to-device (D2D) node, re-usable cellular resources based on the scheduling information. The method also includes receiving related information from another D2D node identifying the re-usable cellular resources for the another D2D node, and identifying common and different re-usable cellular resources between the D2D node and the another D2D node. The method also includes receiving updated scheduling information, and determining, from the detected re-usable cellular resources, whether there is a simultaneous transmission/reception contention. When it is determined that there is a simultaneous transmission/reception contention, the method includes resolving the contention by dynamically selecting a direction of communication based on a preconfigured decision criteria, wherein the direction of communication is one of transmission or reception.

Abstract: Various embodiments pertain to serving a number of advertisements in view of browser information and a user's interaction with the web page containing the advertisements. In at least some embodiments, information regarding the size of a browser user interface in which a browser renders the web page, visibility of the browser user interface, or status of the browser can be obtained and utilized to determine a number of slots available for advertisements. For example, if a browser is being used to render a web page on a screen of a mobile device, fewer advertisements can be served compared to when the same web page is rendered by a browser on a desktop monitor. In some embodiments, page script can be used to obtain information regarding the size of a browser user interface, visibility of the browser user interface, or status of the browser.

Abstract: A space-time-frequency encoding scheme, for use in wireless communication systems, transforms a plurality of input element pairs into a plurality orthogonal element pairs, each of the plurality of input element pairs and corresponding orthogonal element pairs forming an orthogonal matrix. A first element, second element and a duplicate of the second element in each of the plurality of input element pairs and corresponding orthogonal element pairs are mapped as channel elements to three predetermined time-frequency cells in respective first and second two-dimension time-frequency matrixes for transmission via different antennas. As the input element pairs and corresponding orthogonal element pairs, transmitted via different antennas, are orthogonal in both the space-time domain and the space-frequency domain at the same time, two-dimension space-time transmit diversity gain and space-frequency transmit diversity gain can be achieved at the same time.