Abstract: A computing device can receive a query in a first query language that identifies a set of data to be processed and determine that at least a portion of the set of data resides in an external data system that uses a different query language. The query system can translate the query in the first query language in to a second query language for the external data system. To retrieve results of the translated query, the computing device may determine a quantity of results of generated by the translated query and generate one or more results readers to read the results in parallel. The computing device may further process the results and provide them to a user.

Abstract: A computing device can receive a query in a first query language that identifies a set of data to be processed and determine that at least a portion of the set of data resides in an external data system that uses a different query language. The query system can translate the query in the first query language in to a second query language for the external data system. To retrieve results of the translated query, the computing device may determine a quantity of results of generated by the translated query and generate one or more results readers to read the results in parallel. The computing device may further process the results and provide them to a user.

Abstract: A computing device can receive a query in a first query language that identifies a set of data to be processed and determine that at least a portion of the set of data resides in an external data system that uses a different query language. The query system can translate the query in the first query language in to a second query language for the external data system. In translating the query, the computing device may translate one or more time-based query commands into the second query language.

Abstract: Disclosed is an identification method for a Wideband Code Division Multiple Access (WCDMA) network cell soft switching band. The method includes that: a data collection server performs positioning calculation of a mobile station according to Round Trip Time (RTT) data, collected by a Radio Network Controller (RNC), of each of cells in an active set, performs grid statistics according to a positioning calculation result, and stores a statistical result; and a client calculates and displays a soft switching band of a cell in an active set to be queried according to the statistical result corresponding to the cell. Also disclosed are a system corresponding to the method, a data collection server and a storage medium.

Abstract: A surface-enhanced Raman spectroscopy (SERS)—active structure for use in Raman scattering detection has an array of nanostructures formed on a substrate by deposition and chemical etching. The nanostructures are coated with metal nanoparticles.

Abstract: A positioning method for a navigation apparatus and the navigation apparatus are provided. The positioning method includes steps of receiving a Global Positioning System (GPS) signal; reading a previous position-velocity-time (PVT) data; reading a previous map matching (MMT) result; and computing current PVT data according to at least one of the previous PVT data and the previous MMT result.

Abstract: A method and an apparatus for indirect, quantitative estimation of beat-to-beat arterial blood pressure utilizing individualized rectifying technology. A function of TK=H(P) that describes the relationship between Korotkoff's sound delay time Tk and cuff pressure P is obtained by measuring different cuff pressures P and the corresponding Korotkoff's sound delay times Tk in a Korotkoff's sound sensor that is distal to the cuff. Keeping the cuff pressure at a constant value Pm, the blood pressure change can be calculated by using the Korotkoff's sound delay time Tkm according to the function of Tk=H(P). The invention can measure beat-to-beat arterial blood pressures indirectly.

Abstract: An optical receiver communication system converts optical signals modulated by analog or digital waveforms to RF signals. The optical receiver contains an automatic level control circuit to adjust the electronic gain of the system across a broad bandwidth spectrum. Two impedance matching circuits are designed using broad band matching technique to expand the bandwidth for increasing the maximum receivable frequencies to 1 GHz. A RLC impedance matching circuit forms a resonant combination to maintain .+-.1 dB fluctuation between the low-and-high-frequency limits of the bandwidth, and a 75.OMEGA. impedance matching circuit creates a 180.degree. phase shift between outgoing and incoming signals to ensure low return loss.

Abstract: An optical receiver communication system converts optical signals modulated by analog or digital waveforms to RF signals. The optical receiver contains an automatic level control circuit to adjust the electronic gain of the system accordingly across a broad bandwidth spectrum. Two impedance matching circuit are designed using broad band matching technique to expand the bandwidth for increasing the maximum receivable frequency to 1 GHz. A RLC impedance matching circuit forms a resonant combination to maintain .+-.1 dB fluctuation between the low-and high-frequency limits of the bandwidth, and a 75 .OMEGA. impedance matching circuit creates a 180.degree. phase shift between the outgoing and the incoming signal for low return loss.

Abstract: In the present invention a wireless communication system is disclosed. A base unit communicates with a remote unit. The system comprises means for transmitting, using CDMA, between the base unit and the remote unit, in one of a plurality of frequencies channels selected. In one period of time, the base unit transmits and in another period of time, different from the one period, the remote unit transmits. Further, the system comprises means for changing the one frequency channel selected to another frequency channel, different from the one frequency channel, in response to interference in the one frequency channel. Thus, communication between the base unit and the remote unit is then affected over the another frequency channel.

Abstract: In the present invention, the power of a remote transmitted signal is controlled, by a remote communication device. The remote communication device is in communication with the base communication device. The base communication device transmits to the remote device a base transmitted signal. The base transmitted signal is received by the remote device and its power is measured. The transmission power of the remote transmitted signal is controlled in accordance withPower=A+(B-C)where A is representative of the desired power of the remote transmitted signal received by the base device; B is representative of the power of the base transmitted signal, transmitted by the base device; and C is representative of the measured power of the base transmitted signal as received by the remote device.

Abstract: In the present invention a wireless communication system is disclosed. A base unit communicates with a remote unit. The system comprises means for transmitting, using CDMA, between the base unit and the remote unit, in one of a plurality of frequencies channels selected. In one period of time, the base unit transmits and in another period of time, different from the one period, the remote unit transmits. Further, the system comprises means for changing the one frequency channel selected to another frequency channel, different from the one frequency channel, in response to interference in the one frequency channel. Thus, communication between the base unit and the remote unit is then affected over the another frequency channel.

Abstract: For every TDMA block the receiver operation starts with a forward processing procedure and operates on received samples in a first-in first-served order. A sync word detector 32a (see FIG. 4 ) ensures the correct TDMA frame timing and starts the equalizer training. Detected data is stacked in a decision buffer 46. An adaptive equalizer 34a outputs a decision error signal that is used to generate a latch-type loss-of-lock flag. Without loss-of-lock, the receiver works through to the last data symbol and the frame processing is finished.Forward processing is halted and the receiver switches to a backward processing branch if the receiver loses lock midway through the data block. The backward processing branch processes received samples from the input buffer 30 in reverse order. The sync word detector 32b detects the reverse trailing sync word (SYNC #2) and recovers the TDMA symbol timing. The receiver then trains the equalizer and starts data processing in a reverse mode.

Abstract: A method of establishing a wireless communication link between a base unit and a remote unit is disclosed. The base unit transmits periodically a sync signal in a first selected time period in a selected frequency channel. The remote unit scans for the clock signal. The remote unit transmits a first response signal encoded by a first code in the selected frequency channel in response to the detection of the clock signal. The first response signal is transmitted in a second selected time period, different from the first selected time period. The base unit transmits a first control signal which is encoded by said first code, in the selected frequency channel, in a third selected time period, which is different from the first and second selected time periods. The first control signal contains a second code to be used in the communication session between the base unit and the remote unit. The remote unit receives the first control signal in the third time period. The remote unit decodes the first control signal.

Abstract: In the present invention a method of re-establishing a wireless communication after a communication break is disclosed. Prior to the communication break, a base unit transmits to a remote unit a table of channels of communication to be used. The base unit also transmits a clock signal value to the remote unit. After a communication break, the remote unit continues to count the clock signals generated from a clock signal source internal thereto. The remote unit applies a function to the value of the clock signal to obtain an entry in the table. The channel of communication associated with the entry in the table is selected by the remote unit. The base unit continues to count the clock signals generated internal thereto. The base unit applies the same function as the function used by the remote unit to the value of the clock signal to obtain an entry in the table. The base unit selects the channel of communication associated with the entry in the table.