Abstract: A resistivity logging system includes a plurality of excitation electrodes, at least one return electrode, and a plurality of monitor electrodes. The resistivity logging system also includes a controller that determines a level of excitation current to be emitted by at least one of the plurality of excitation electrodes during a subsequent excitation cycle based on a comparison of measured downhole parameter values corresponding to excitation current emitted in two previous excitation cycles.

Abstract: The invention, in some embodiments, relates to solar energy collectors, and methods of use thereof. In some embodiments, the invention relates to liquid-air transpired solar energy collectors, and methods of use thereof. In some embodiments, the invention relates to thermal energy transfer systems that comprise solar energy collectors, and methods of use thereof. In some embodiments of the invention, methods of constructing solar energy collectors are provided.

Abstract: A resistivity logging tool includes a plurality of excitation electrodes, at least one return electrode, and a plurality of monitor electrodes. The resistivity logging tool also includes a controller that determines a set of independent currents to be emitted by at least some of the plurality of excitation electrodes during an excitation cycle based on at least one measured downhole parameter and at least one predetermined constraint.

Abstract: A current regulator for regulating alternating current (AC) flow to a load device is provided. The current regulator can include an AC coupling device that can be electrically connected to the load device via an output electrical path, a current control device electrically connected in series with the AC coupling device, and an AC feedback circuit electrically connected to the output electrical path and the current control device. The current control device can modify a current flow through at least one component of the AC coupling device in response to receiving an error correction current. An output AC current provided to the load device can be controlled based on the current flow through the component of the AC coupling device. The AC feedback circuit can include voltage error compensation device that provides the error correction current in response to receiving a feedback voltage corresponding to the output AC current.

Abstract: A resistivity logging system includes a plurality of excitation electrodes, at least one return electrode, and a plurality of monitor electrodes. The resistivity logging system also includes a controller that determines a level of excitation current to be emitted by at least one of the plurality of excitation electrodes during a subsequent excitation cycle based on a comparison of measured downhole parameter values corresponding to excitation current emitted in two previous excitation cycles.

Abstract: A communications server apparatus comprises a processor and a memory. The communications server apparatus is configured, under control of the processor, to execute instructions stored in the memory to receive, over a communications channel, link information relating to a caller input, the caller input being activation of a link in a page by a caller, the link being associated with an offer, and activation of the link being a request for a voice communication session between the caller and a call recipient about the offer. The communications server apparatus identifies the call recipient using the link information and initiates the voice communication session between a caller device associated with the caller and a recipient device associated with the call recipient. Supplementary information relating to the activation of the link is transmitted to the recipient device.

Abstract: Technologies are described for reducing distortion in amplified signals in well logging tools based on spectral analyses of the amplified signals. For example, a system includes a well logging tool. The well logging tool includes an excitation source to direct an excitation signal towards an environment adjacent a wellbore and a receiver to amplify a probe signal received from the environment adjacent the wellbore in response to the excitation signal. The system also includes a feedback module to receive the amplified signal. The feedback module includes a spectrum analyzer module to spectrally analyze the amplified signal to generate spectral information of the amplified signal; and a controller module to determine, from the spectral information, whether the amplified signal includes distortion, and if so, to issue a feedback signal to the excitation source or the receiver to cause at least a reduction of the distortion in the amplified signal.

Abstract: A communications server apparatus (102) comprises a processor (116) and a memory (118), and is configured, under control of the processor, to execute instructions (120) stored in the memory to receive, over a communications link (108, 110, 112), URL information relating to a caller input at a calling device (104), the caller input being selection or activation of a URL as a request for a communication session with a recipient device (106a, 106b). The recipient device is identified using the URL information and a communication session is initiated between the calling device and the recipient device. The calling device implements complementary functionality to interface with the communications server apparatus.

Abstract: Technologies are described for reducing distortion in amplified signals in well logging tools based on spectral analyses of the amplified signals. For example, a system includes a well logging tool. The well logging tool includes an excitation source to direct an excitation signal towards an environment adjacent a wellbore and a receiver to amplify a probe signal received from the environment adjacent the wellbore in response to the excitation signal. The system also includes a feedback module to receive the amplified signal. The feedback module includes a spectrum analyzer module to spectrally analyze the amplified signal to generate spectral information of the amplified signal; and a controller module to determine, from the spectral information, whether the amplified signal includes distortion, and if so, to issue a feedback signal to the excitation source or the receiver to cause at least a reduction of the distortion in the amplified signal.

Abstract: Methods, systems and computer program products are provided estimating a physiological characteristic of a subject based on a reflected signal received by a UWB radar system. The method comprises: processing a signal received from the UWB radar system to obtain a frequency domain representation of the signal; discerning, from the frequency domain representation, a plurality of elements considered to belong to a physiological characteristic harmonic set {PC0, PC1, PC2, PC3 . . . }, the physiological characteristic harmonic set comprising a fundamental frequency of the physiological characteristics and harmonic frequencies of the physiological characteristic; and estimating the physiological characteristic based on the discerned elements of the physiological characteristic harmonic set.

Abstract: The invention, in some embodiments, relates to solar energy collectors, and methods of use thereof. In some embodiments, the invention relates to liquid-air transpired solar energy collectors, and methods of use thereof. In some embodiments, the invention relates to thermal energy transfer systems that comprise solar energy collectors, and methods of use thereof. In some embodiments of the invention, methods of constructing solar energy collectors are provided.

Abstract: There is provided compositions and methods for improving the therapeutic efficacy of various cancer treatments, for example endocrine therapy, chemotherapy or radiation therapy, by inhibiting the expression of one or more genes involved in the cellular autophagy response. The compositions include compositions comprising an siRNA directed against an Atg gene and may be used to inhibit expression of an Atg gene in a cell currently undergoing cancer therapy, or to treat, inhibit or prevent cancer in a subject in combination with a cancer therapy.

Abstract: There is provided compositions and methods for improving the therapeutic efficacy of various cancer treatments, for example endocrine therapy, chemotherapy or radiation therapy, by inhibiting the expression of one or more genes involved in the cellular autophagy response. The compositions include compositions comprising an siRNA directed against an Atg gene and may be used to inhibit expression of an Atg gene in a cell currently undergoing cancer therapy, or to treat, inhibit or prevent cancer in a subject in combination with a cancer therapy.

Abstract: A process executing on a computing system may encounter an exception. Pointers or other references created by the exception may identify portions of the computing system's memory containing the binary code that was executing at the time of the exception. The exception-causing code from the system memory may be compared to an original version of the code from a non-volatile source. If the comparison identifies a hardware corruption pattern, the computing system may communicate information about the process and the exception to an error analysis server. Using historical exception data, the error analysis server may determine if the identified corruption pattern is most likely the result of corrupt hardware at the computing system. If corrupt hardware was the most likely result of the exception, then the server may communicate with the computing system to recommend or initiate a hardware diagnostic routine at the computing system to identify the faulty hardware.