Abstract: Disclosed are a polyethylene glycol conjugate drug, and a preparation method therefor and the use thereof. Specifically, the present invention relates to a polyethylene glycol conjugate drug represented by formula A or a pharmaceutically acceptable salt thereof, a method for preparing the polyethylene glycol conjugate drug or the pharmaceutically acceptable salt thereof, an intermediate for preparing the polyethylene glycol conjugate drug or the pharmaceutically acceptable salt thereof, a pharmaceutical composition comprising the polyethylene glycol conjugate drug or the pharmaceutically acceptable salt thereof, and the use of the polyethylene glycol conjugate drug or the pharmaceutically acceptable salt thereof in the preparation of a drug.

Abstract: A polyethylene glycol conjugate drug synergist, a preparation method therefor, and use thereof, specifically relating to a polyethylene glycol conjugate drug synergist as shown in formula I or a pharmaceutically acceptable salt thereof, a preparation method for the polyethylene glycol conjugate drug synergist or the pharmaceutically acceptable salt thereof, an intermediate for preparing the polyethylent glycol conjugate drug synergist or the pharmaceutically acceptable salt thereof, a composition containing the polyethylene glycol conjugate drug synergist or the pharmaceutically acceptable salt thereof, and use of the polyethylene glycol conjugate drug synergist or the pharmaceutically acceptable salt thereof in preparation of a drug.

Abstract: A memory management method is provided according to an exemplary embodiment of the disclosure. The method includes: receiving a plurality of commands from a host system; counting a newest idle time corresponding to the commands and a past average command-receiving-time-interval corresponding to the commands; and dynamically changing a work mode of a memory storage device from a first work mode to a second work mode if the newest idle time is larger than a first threshold value and the past average command-receiving-time-interval is larger than a second threshold value. Therefore, a power consumption of the memory storage device can be reduced and a work mode of the memory storage device may not be changed too frequently.

Abstract: A memory management method is provided according to an exemplary embodiment of the disclosure. The method includes: receiving a plurality of commands from a host system; counting a newest idle time corresponding to the commands and a past average command-receiving-time-interval corresponding to the commands; and dynamically changing a work mode of a memory storage device from a first work mode to a second work mode if the newest idle time is larger than a first threshold value and the past average command-receiving-time-interval is larger than a second threshold value. Therefore, a power consumption of the memory storage device can be reduced and a work mode of the memory storage device may not be changed too frequently.

Abstract: A method and a device for obtaining virus signatures in the field of computer security have been disclosed. The method includes: obtaining text strings contained in each virus sample within a virus sample set; selecting text strings for use as virus signatures candidate according to a first frequency at which each text string occurs in a non-virus sample set and a second frequency at which each text string occurs in the virus sample set; calculating an information entropy of the virus signatures candidate according to a quantity of virus samples containing the virus signatures candidate and a quantity of non-virus samples containing the virus signatures candidate; and selecting virus signatures from the virus signatures candidate according to the information entropy. The present disclosure may timely identify the latest virus signatures and ensure that the obtained virus signatures are optimal signatures and may identify a wide range of virus variants.

Abstract: A gas chromatographic (GC) unit or module may include one or more microfluidic devices, a GC column, and a flow controller (FC) comprising an FC input port for controlling fluid flows and pressures. The GC unit may be reconfigurable to provide different functionalities. The GC unit may be fluidly coupled to various other fluidic devices, such as other GC units, sample inlets, GC detectors, and the like. Multiple GC units and other fluidic devices may be utilized to build GC devices and associated systems of flexible, reconfigurable, and scalable architecture, thereby enabling a variety of modes of operation useful for present and future GC method development.

Abstract: An MFC includes: a proportional valve; a mass flow sensor; a first flow line connecting from an outlet of the proportional valve through the mass flow sensor to an exit line; a second flow line joining the first flow line at a first junction located upstream of the mass flow sensor and at a second junction located downstream of the mass flow sensor; a switching valve placed such that the switching valve can regulate a flow of a gas through the first flow line or the second flow line; and a control device connected to provide a feedback control loop for regulating the proportional valve based on signals measured by the mass flow sensor, wherein the control device includes a program for keeping a rate of a flow exiting the exit line substantially constant when the flow is through the second flow line.

Abstract: A method and a device for obtaining virus signatures in the field of computer security have been disclosed. The method includes: obtaining text strings contained in each virus sample within a virus sample set; selecting text strings for use as virus signatures candidate according to a first frequency at which each text string occurs in a non-virus sample set and a second frequency at which each text string occurs in the virus sample set; calculating an information entropy of the virus signatures candidate according to a quantity of virus samples containing the virus signatures candidate and a quantity of non-virus samples containing the virus signatures candidate; and selecting virus signatures from the virus signatures candidate according to the information entropy. The present disclosure may timely identify the latest virus signatures and ensure that the obtained virus signatures are optimal signatures and may identify a wide range of virus variants.

Abstract: A method and a device for obtaining virus signatures in the field of computer security have been disclosed. The method includes: obtaining text strings contained in each virus sample within a virus sample set; selecting text strings for use as virus signatures candidate according to a first frequency at which each text string occurs in a non-virus sample set and a second frequency at which each text string occurs in the virus sample set; calculating an information entropy of the virus signatures candidate according to a quantity of virus samples containing the virus signatures candidate and a quantity of non-virus samples containing the virus signatures candidate; and selecting virus signatures from the virus signatures candidate according to the information entropy. The present disclosure may timely identify the latest virus signatures and ensure that the obtained virus signatures are optimal signatures and may identify a wide range of virus variants.

Abstract: A gas chromatographic (GC) unit or module may include one or more microfluidic devices, a GC column, and a flow controller (FC) comprising an FC input port for controlling fluid flows and pressures. The GC unit may be reconfigurable to provide different functionalities. The GC unit may be fluidly coupled to various other fluidic devices, such as other GC units, sample inlets, GC detectors, and the like. Multiple GC units and other fluidic devices may be utilized to build GC devices and associated systems of flexible, reconfigurable, and scalable architecture, thereby enabling a variety of modes of operation useful for present and future GC method development.

Abstract: An MFC includes: a proportional valve; a mass flow sensor; a first flow line connecting from an outlet of the proportional valve through the mass flow sensor to an exit line; a second flow line joining the first flow line at a first junction located upstream of the mass flow sensor and at a second junction located downstream of the mass flow sensor; a switching valve placed such that the switching valve can regulate a flow of a gas through the first flow line or the second flow line; and a control device connected to provide a feedback control loop for regulating the proportional valve based on signals measured by the mass flow sensor, wherein the control device includes a program for keeping a rate of a flow exiting the exit line substantially constant when the flow is through the second flow line.

Abstract: A method and a device for obtaining virus signatures in the field of computer security have been disclosed. The method includes: obtaining text strings contained in each virus sample within a virus sample set; selecting text strings for use as virus signatures candidate according to a first frequency at which each text string occurs in a non-virus sample set and a second frequency at which each text string occurs in the virus sample set; calculating an information entropy of the virus signatures candidate according to a quantity of virus samples containing the virus signatures candidate and a quantity of non-virus samples containing the virus signatures candidate; and selecting virus signatures from the virus signatures candidate according to the information entropy. The present disclosure may timely identify the latest virus signatures and ensure that the obtained virus signatures are optimal signatures and may identify a wide range of virus variants.

Abstract: An apparatus comprises a proportional valve, a first channel connected to the proportional valve, a flow sensor connected to the first channel and configured to measure gas flow in the first channel, a split channel connected to the first channel at a location between the proportional valve and the flow sensor, and a control component connected between the flow sensor and the proportional valve and configured to control gas flow in the first channel.

Abstract: A method for avoiding interference in a wireless telecommunication system is provided. The method includes providing communication between a first and second component at an initial frequency. A plurality of successive line quality indicators is determined at a line quality monitor of the first component. Consecutive line quality indicators are summed over a predetermined time to determine a slow hop count. A determination is made as to whether the slow hop count is greater than a slow hop threshold. A determination is made as to whether to provide communication with the first component at a second frequency when the slow hop count is greater than the slow hop threshold. This determination is based on a power level of the second component and a communication strength received from the second component at the first component. A signal is communicated from the first component to the second component requesting the second component to provide communication at the second frequency.

Abstract: A method for testing a plurality of cordless telephones (12,14) includes assigning a temporary ID to each of the plurality of cordless telephones (12,14). Each temporary ID identifies a first activation frequency for each corresponding cordless telephone (12,14). The method also includes activating each cordless telephone (12,14) at the first activation frequency identified by the corresponding temporary ID and simultaneously testing each cordless telephone (12,14) at the corresponding first activation frequency. The method further includes assigning a permanent ID to each cordless telephone (12,14) after completion of the testing. The permanent ID identifies a second activation frequency for a subsequent activation of the cordless telephones (12,14).

Abstract: A method for transmitting and receiving caller ID data (28) in a cordless telephone system is provided that comprises establishing a cordless telephone system having a base station (12) and a mobile unit (14). The method then provides for receiving caller ID data (28) at a base station (12) followed by terminating any current caller ID data (28) transmissions from the base unit (12) to the mobile unit (14). The method next provides for appending start (92) and end message codes (94) to the caller ID data (28) to generate a caller ID message followed by packetizing the caller ID message. The method next provides for transmitting the caller ID packets (72) from the base station (12) to the mobile unit (14). The method next provides for terminating the caller ID packet (72) transmission when the end message code (94) is transmitted. The method next provides for receiving the caller ID packets (72) at the mobile unit (14).

Abstract: A method is provided for wireless communication. The method includes communicating from a first unit to a second unit a plurality of transition signals. Each of the transition signals has a sequential value. The method further includes transitioning the first unit and the second unit from a first state to a second state simultaneously based on the sequential values of the transition signals.

Abstract: A method and system are provided for synchronizing wireless communication devices. The method and system involve providing a first unit and a second unit for communication over a wireless communication link. Further, an identical identifier is assigned to the first and second units. Also, a data message is constructed having control data. The data message includes a plurality of data bytes and a portion of the control data corresponds to the identifier. The data message is split into a plurality of message portions and the message portions are transmitted from the first unit to the second unit. The message portions are received at the second unit. Control data from the message portions is assembled to form a control message at the second unit. The identifier portion of the control message is compared with the identifier assigned to the second unit. When the identifier portion of the control message matches the identifier assigned to the second unit, the second unit enters an in-synchronization state.

Abstract: A method and system are provided for wireless communication. A base unit and a mobile unit are provided which are operable to communicate over an air interface having a plurality of channels. The method and system further include transmitting from the mobile unit a message on a selected channel for a first predetermined time. The channels are scanned at the base unit. Also, the message is detected at the base unit on the selected channel and the selected channel is used as an initial channel for a wireless communication link between the mobile unit and the base unit.

Abstract: A method for avoiding interference in a wireless telecommunication system is provided. The method includes providing communication between a first and second component at an initial frequency. A plurality of successive line quality indicators is determined at a line quality monitor of the first component. Consecutive line quality indicators are summed over a predetermined time to determine a slow hop count. A determination is made as to whether the slow hop count is greater than a slow hop threshold. A determination is made as to whether to provide communication with the first component at a second frequency when the slow hop count is greater than the slow hop threshold. This determination is based on a power level of the second component and a communication strength received from the second component at the first component. A signal is communicated from the first component to the second component requesting the second component to provide communication at the second frequency.