Abstract: A power supply unit for providing power to servers and a power supply system for servers is disclosed. The power supply unit for providing power to servers, comprises a housing; a plurality of power supplies arranged in the housing, the plurality of power supplies comprising a first output end and a second output end; a circuit board comprising a first conductive plate and a second conductive plate, the first conductive plate being electrically connected with the first output end, and the second conductive plate being electrically connected with the second output end; and an integrated management module electrically connected with the circuit board.

Abstract: A server rack assembly includes a server rack, a power supply device, and a bus-bar electronically connected to the power supply device. The server rack includes a bottom plate and a post substantially perpendicular to the bottom plate. The power supply device is attached to the post in a first direction that is substantially parallel to the bottom plate. The bus-bar includes a plurality of connectors adapted to electronically connect a plurality of servers. The bus-bar is attached to the post in a second direction that is substantially perpendicular to the bottom plate, and the plurality of connectors are arranged on the bus-bar in the second direction.

Abstract: A server rack assembly receives a number of servers. The server rack assembly includes a server rack, a bus-bar, and a power supply. The server rack includes a stand column. The server rack defines a plurality of server spaces for receiving the plurality of servers. A bus-bar is mounted to the server rack and includes a plurality of connectors aligned in a first direction substantially parallel to the stand column. The bus-bar is adapted to electronically plug to the plurality of servers. The power supply device is pluggable to one of the plurality of connectors of the bus-bar along a second direction substantially perpendicular to the stand column The power supply device is adapted to output direct current to the bus-bar.

Abstract: A server rack assembly receives a plurality of servers. The server rack assembly includes a server rack, a bus-bar, and a power supply. The server rack includes a stand column. The server rack defines a plurality of server spaces for receiving the plurality of servers. A bus-bar is mounted to the server rack and includes a plurality of connectors aligned in a first direction substantially parallel to the stand column. The bus-bar is adapted to electronically plug to the plurality of servers. The power supply device is electronically connected to one of the plurality of connectors of the bus-bar. The power supply device is adapted to output direct current to the bus-bar. The power supply is approximately twice the height of each of the plurality of server spaces.

Abstract: A server rack assembly receives a plurality of servers. The server rack assembly includes a server rack, a bus-bar, and a power supply. The server rack includes a stand column. The server rack defines a plurality of server spaces for receiving the plurality of servers. A bus-bar is mounted to the server rack and includes a plurality of connectors aligned in a first direction substantially parallel to the stand column. The bus-bar is adapted to electronically plug to the plurality of servers. The power supply device is electronically connected to a middle portion of the bus-bar. The power supply device is adapted to output direct current to the bus-bar.

Abstract: A server rack assembly receives a plurality of servers. The server rack assembly includes a server rack, a bus-bar, a power supply and a plurality of fan modules. The server rack includes a stand column. The server rack defines a plurality of server spaces for receiving the plurality of servers. A bus-bar is mounted to the server rack and includes a plurality of connectors aligned in a first direction substantially parallel to the stand column. The bus-bar is adapted to electronically plug to the plurality of servers. The power supply device is electronically connected to the bus-bar. The power supply device is adapted to output direct current to the bus-bar. Each of the plurality of fan modules is adapted to dissipate heat from three of the plurality of server spaces.

Abstract: A fan assembly includes a bracket, a fan and a cage. The bracket includes a ventilation plate. The fan is received in the bracket and secured to the ventilation plate. The cage is received in the bracket and secured to the fan. The cage defines an opening and includes a plurality of pieces rotatably received in the opening. The plurality of pieces cover the opening. The cage further includes a plurality of limiting pieces extending from an inner surface of the opening. The pressure of moving air from the fan is capable of rotating the plurality of pieces, but any over-rotation of the plurality of pieces is prevented by the plurality of limiting pieces.

Abstract: A power supply device includes a power supply module, a main bus-bar module, an assistant bus-bar module, and a plurality of connectors. The power supply module, for supplying a direct current voltage, includes a positive terminal and a negative terminal for outputting the current voltage. The main bus-bar module includes a first main bus-bar and a second main bus-bar. The first main bus-bar is electronically connected to the positive terminal. The second main bus-bar is electronically connected to the negative terminal. The assistant bus-bar module includes a first assistant bus-bar electronically connected to the second main bus-bar, and a second assistant bus-bar electronically connected to the first main bus-bar. Each connector includes a first pin and a second pin. The first pin is inserted and electronically connected to the first assistant bus-bar. The second pin is inserted and electronically connected to the second assistant bus-bar.

Abstract: The power supply device includes a main bus-bar assembly, an assistant bus-bar assembly, and a plurality of connectors being electronically connected to the assistant bus-bar assembly. The main bus-bar assembly includes a first main bus-bar and a second main bus-bar attached to the first main bus-bar. The assistant bus-bar assembly includes a first assistant bus-bar and a second assistant bus-bar attached to the first assistant bus-bar. The first assistant bus-bar is electronically connected to the first main bus-bar, and the second assistant bus-bar is connected to the second main bus-bar. Each of the plurality of connector includes a first pin and a second pin. The first pin is engaged with the first assistant bus-bar, and the second pin is engaged with the second assistant bus-bar.

Abstract: A computer-implemented method, computer-implemented system, and a computer program product for answering a database-based query of a computerized database system. The method includes: generating a canonical individual ind? with respect to a role and a concept, for an existential restriction in an ontology used in the computerized database system; converting implicit data in original data into explicit data using the canonical individual ind? and the ontology; and retrieving an answer meeting all query conditions in a query from the original data and the converted explicit data. The computer-implemented system includes: a canonical individual generation unit; a data conversion engine; and a query unit.

Abstract: A computer-implemented method, computer-implemented system, and a computer program product for answering a database-based query of a computerized database system. The method includes: generating a canonical individual ind? with respect to a role and a concept, for an existential restriction in an ontology used in the computerized database system; converting implicit data in original data into explicit data using the canonical individual ind? and the ontology; and retrieving an answer meeting all query conditions in a query from the original data and the converted explicit data. The computer-implemented system includes: a canonical individual generation unit; a data conversion engine; and a query unit.

Abstract: A method for transforming Extensible Markup Language (XML) data to Resource Description Framework (RDF) data. The method includes the steps of: receiving a predefined mapping file; retrieving the correspondences between XML elements and/or attributes in the XML data and/or properties and concepts of the RDF data as specified by the mapping file, wherein the correspondence is represented by elements of the mapping file; processing elements of the mapping file to obtain XML elements and/or attributes and generate corresponding RDF resources; and generating the RDF data by using the generated RDF resources. A corresponding transformation engine apparatus is configured to perform the foregoing method.

Abstract: A chip card retaining mechanism includes a first holding frame, a second holding frame and a circuitry. The first holding frame includes a latching portion and a connecting board. The latching portion defines a first receiving room for receiving a first chip card. The second holding frame is attached to the connecting board of the first holding frame, and is perpendicular to the latching portion of the first holding frame. The second holding frame defines a second receiving room for receiving a second chip card. The circuitry is formed on the connecting board and the latching portion. The first chip card is electronically connected to the second chip card via the circuitry.

Abstract: A SIM card fixing assembly is used for fixing a SIM card to an electronic device. The electronic device includes a housing. The SIM card fixing assembly includes a receiving portion defined in the housing, a rotary member and a latching member. The rotary member is rotatable relative to the housing. The latching member is slidably fixed to the rotary member. A side surface of the receiving portion defines a retaining groove to receive an end of the SIM card. The rotary member includes a latching portion. The latching member includes a first plate and a second plate extending from an edge of the first plate. The first plate includes a resilient hook extending toward to the second plate. The second plate defines a latching slot to receive the other end of the SIM card. When the latching member is slid relative to the rotary member, the other end of the SIM card is latched into the latching slot, the resilient hook is engaged with the latching portion.

Abstract: A SIM card fixing assembly is used for fixing a SIM card to an electronic device. The electronic device includes a housing. The SIM card fixing assembly includes a receiving portion defined in the housing, a rotary member and a latching member. The rotary member is rotatable relative to the housing. The latching member is slidably fixed to the rotary member. A side surface of the receiving portion defines a retaining groove to receive an end of the SIM card. The rotary member includes a latching portion. The latching member includes a first plate and a second plate extending from an edge of the first plate. The first plate includes a resilient hook extending toward to the second plate. The second plate defines a latching slot to receive the other end of the SIM card. When the latching member is slid relative to the rotary member, the other end of the SIM card is latched into the latching slot, the resilient hook is engaged with the latching portion.

Abstract: An accessory holding mechanism used in a portable electronic device for holding an accessory therein includes a housing, a sliding member, a positioning member and an elastic member. The sliding member is slidably assembled on the housing and receiving the accessory therein. The positioning member is movably mounted on the housing. The elastic member is mounted between the housing and the sliding member. The positioning member engages with the sliding member and the accessory to hold the accessory and the elastic member is elongated when the accessory is pushed into the sliding member, and the elastic member rebounds to drive the positioning member to release the accessory and drive the accessory to exit from the accessory holding mechanism through the sliding member after the held accessory is further pushed into the sliding member.

Abstract: A chip card retaining mechanism includes a first holding frame, a second holding frame and a circuitry. The first holding frame includes a latching portion and a connecting board. The latching portion defines a first receiving room for receiving a first chip card. The second holding frame is attached to the connecting board of the first holding frame, and is perpendicular to the latching portion of the first holding frame. The second holding frame defines a second receiving room for receiving a second chip card. The circuitry is formed on the connecting board and the latching portion. The first chip card is electronically connected to the second chip card via the circuitry.

Abstract: A mobile phone includes a first housing including a first rotating component with a first slit, a display panel installed on the first housing, a second housing comprising a second rotating component with a second slit and connected to the first rotating component, wherein a plurality of buttons is installed on the second housing for inputting button signals, a flexible printed circuit (FPC) with a first end stretching from the first slit and a second end stretching from the second slit, a third housing connected to the first housing, and a fourth housing connected to the second housing.