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With groundwater pumping and the evaporation of heavy weights of water, Earth's crust rebounds. This movement affects the fault, causing earthquakes.

A new report provides a possible scapegoat for BP in last year’s oil spill. Investigators say the blame for the disaster does not lie with BP but instead with

A perplexing amount of the planet's water slips deep into Earth's interior at some tectonic boundaries, a new study has found. But where does it go?

Feeling down? Happy? Angry? No matter how you're feeling, you can now blame it on your friends' most recent Facebook posts.

As Japan recovers from a massive earthquake, here's a look at why such tremors happen and where the next one might strike.

Lithium engineering consultants TRU Group Inc says lithium player "talking-up" prices have distorted the global lithium market and its not just unreal lithium prices but also other industry discrepancies that should trouble observers

The Corporate Whistleblower Center says, "We think one of the lowest forms of life are defense contractors who rip-off the taxpayers and potentially put our service members at risk. An employee who blows the whistle on a company like this is a hero."

Credit bureau Trans-Union Cibil has said that two out of three MSMEs entered this lockdown with structurally strong positions.

Robin Lee writes: To check for linearity and homoscedasticity, we are taught to plot residuals against y fitted value in many statistics classes. However, plotting residuals against y fitted value has always been a confusing practice that I know that I should use but can’t quite explain why. It is not until this week I […]

A tutorial to replace the default controls on a Vimeo video with a Play / Pause button, and make responsive.

Having a default commit message is really useful for a number of reasons: It can formalize your commit messages It serves as a good reminder for the information you should add to your commit message, like issue number If you set it to “Drunk AF, don’t accept this” To set a default commit message on […]

The post How to Set a Default Commit Message appeared first on David Walsh Blog.

With the increase in use of Unmanned Aerial Vehicles (UAVs)/drones, it is important to detect and identify causes of failure in real time for proper recovery from a potential crash-like scenario or post incident forensics analysis. The cause of crash could be either a fault in the sensor/actuator system, a physical damage/attack, or a cyber attack on the drone's software. In this paper, we propose novel architectures based on deep Convolutional and Long Short-Term Memory Neural Networks (CNNs and LSTMs) to detect (via Autoencoder) and classify drone mis-operations based on sensor data. The proposed architectures are able to learn high-level features automatically from the raw sensor data and learn the spatial and temporal dynamics in the sensor data. We validate the proposed deep-learning architectures via simulations and experiments on a real drone. Empirical results show that our solution is able to detect with over 90% accuracy and classify various types of drone mis-operations (with about 99% accuracy (simulation data) and upto 88% accuracy (experimental data)).

Diagnosis of high impedance fault (HIF) is a challenge for nowadays distribution network protections. The fault current of a HIF is much lower than that of a normal load, and fault feature is significantly affected by fault scenarios. A detection and feeder identification algorithm for HIFs is proposed in this paper, based on the high-resolution and synchronous waveform data. In the algorithm, an interval slope is defined to describe the waveform distortions, which guarantees a uniform feature description under various HIF nonlinearities and noise interferences. For three typical types of network neutrals, i.e.,isolated neutral, resonant neutral, and low-resistor-earthed neutral, differences of the distorted components between the zero-sequence currents of healthy and faulty feeders are mathematically deduced, respectively. As a result, the proposed criterion, which is based on the distortion relationships between zero-sequence currents of feeders and the zero-sequence voltage at the substation, is theoretically supported. 28 HIFs grounded to various materials are tested in a 10kV distribution networkwith three neutral types, and are utilized to verify the effectiveness of the proposed algorithm.

In this paper, we present a novel MaxSAT-based technique to compute Maximum Probability Minimal Cut Sets (MPMCSs) in fault trees. We model the MPMCS problem as a Weighted Partial MaxSAT problem and solve it using a parallel SAT-solving architecture. The results obtained with our open source tool indicate that the approach is effective and efficient.

A leading thread and a trailing thread are executed in parallel. Assuming that no transient fault occurs in each section, a system is speculatively executed in the section, with the leading thread and the trailing thread preferably being assigned to two different cores. At this time, the leading thread and the trailing thread are simultaneously executed, performing a buffering operation on a thread local area without performing a write operation on a shared memory. When the respective execution results of the two threads match each other, the content buffered to the thread local area is committed and written to the shared memory. When the respective execution results of the two threads do not match each other, the leading thread and the trailing thread are rolled back to a preceding commit point and re-executed.

Disclosed is a novel computer implemented system, on demand service, computer program product and a method that leverages combined concrete and symbolic execution and several fault-localization techniques to automatically detects failures and localizes faults in PHP Hypertext Preprocessor (“PHP”) Web applications.

Aspects of the invention relate to techniques of defect injection for transistor-level fault simulation. A circuit element in a circuit netlist of a circuit is first selected for defect injection. Next, a defect is determined based on whether the selected circuit element is a design-intent circuit element or a parasitic circuit element. After the defect is determined, the defect is injected into the circuit netlist and then the circuit is simulated.

Fault Current Limiters (FCL) provide protection for upstream and/or downstream devices in electric power grids. Conventional FCL require the use of expensive conductors and liquid or gas cryogen handling. Disclosed embodiments describe FCL systems and devices that use lower cost superconductors, require no liquid cryogen, and are fast cycling. These improved FCL can sustain many sequential faults and require less time to clear faults while avoiding the use of liquid cryogen. Disclosed embodiments describe a FCL with a superconductor and cladding cooled to cryogenic temperatures; these are connected in parallel with a second resistor across two nodes in a circuit. According to disclosed embodiments, the resistance of the superconducting components and its sheath in the fault mode are sufficiently high to minimize energy deposition within the cryogenic system, minimizing recovery time. A scheme for intermediate heat storage also is described which allows a useful compromise between conductor length enabled energy minimization and allowable number of sequential faults to enable an overall system design which is affordable, and yet allows conduction cooled (cryogen free) systems which have fast recovery and allows for multiple sequential faults.

An inductive fault current limiter (1), has a normally conducting primary coil assembly (2) with a multiplicity of turns (3), and a superconducting, short-circuited secondary coil assembly (4). The primary coil assembly (2) and the secondary coil assembly (4) are disposed at least substantially coaxially with respect to each other and at least partially interleaved in each other. The secondary coil assembly (4) has a first coil section (4a) disposed radially inside the turns (3) of the primary coil assembly (2) and a second coil section (4b) disposed radially outside the turns (3) of the primary coil assembly (2). The fault current limiter has an increased inductance ratio.

A method is described for detecting the time messages in the faulty signal of a time-signal transmitter comprising the steps below. Probabilities are assigned to the received information/bits as they are received and whose sign specifies the value of the bit and whose numerical value indicates the certainty of reception. Except for the bits designating the minute information, the probabilities of successive time messages are totaled with time correctness in a one-dimensional memory field. From the totaled probabilities, a reduced time message is reconstructed that initially contains no information on the minutes. If the reconstructed time message does not change over two successive time intervals, and if preset minimum values for the number of probabilities are exceeded for all bits, then the reduced time message is recognized as being correct. The minutes are determined separately and added to the time message recognized as being correct.

A dynamically expandable and contractible fault-tolerant storage system employs a virtual hot spare that is created from unused storage capacity across a plurality of storage devices. This unused storage capacity is available if and when a storage device fails for storage of data recovered from the remaining storage device(s). On an ongoing basis, the storage system may determine the amount of unused storage capacity that would be required for the virtual hot spare (e.g., based on the number of storage devices, the capacities of the various storage devices, the amount of data stored, and the manner in which the data is stored) and generate a signal if additional storage capacity is needed for a virtual hot spare.

The disclosure provides a method and a system for detecting a fiber fault in a Passive Optical Network (PON). The system comprises an optical path detection device, a Wavelength Division Multiplexing (WDM) coupler, a wavelength selection coupler, a branch fiber selector and a wavelength selection router. The detection system is attached to an original PON system, without influencing the operation of the original system while performing the detection. With the disclosure, the problem of being unable to determine whether there is a fault in a branch fiber due to the loss of an optical path detection reflection signal is solved, the branch fiber with a fault can be quickly located and fixed, thus the operational and maintenance costs of an operator are reduced.

An apparatus and method for fault indication and localization in a Passive Optical Network (PON) comprising a multistage power splitter (100, 200, 300) with at least one 1:N splitter (120, 221, 222, 321, 322) followed by N items of 2:M splitters (131, 132, 231-233, 331-336), wherein N and M are integers greater than 1. The apparatus also comprises an Optical Time Domain Reflectometry (OTDR) device (110, 210, 310) capable of inserting an OTDR signal into the power splitter (100, 200, 300), and adapted to insert the OTDR signal between the first stage of the at least one 1:N splitter (120, 221, 222, 321, 322) and the second N items of 2:M splitters (131, 132, 231-233, 331-336).

Apparatus and method for detecting and compensating for lubrication disturbance (lube disturb) events on a rotatable data recording medium. In some embodiments, a lube disturb event is detected responsive to displacement of a data transducer away from a first memory location on a rotating data recording medium during a write operation to write data thereto. The lube disturb event arises responsive to a transfer of accumulated contamination from a data transducer to a lubrication layer on the rotating data recording medium and a smearing of the transferred accumulated contamination along the first memory location. The write data are stored to a different, second memory location instead of to the first memory location responsive to the detected lube disturb event.

A braking system for a vehicle, particularly a commercial vehicle, includes an operating brake device for providing an operating brake function for braking the vehicle, and a parking brake device for providing a parking brake function independently of the operating brake system. If one of the two braking devices partially or completely fails, the vehicle can be braked automatically by means of the other braking device.

A fault tolerant electrical machine including: a plurality of phases; a detector arranged to detect a fault in at least one of the phases; and a controller arranged to intentionally cause a fault in at least one other of the phases such that the vector sum of the second harmonic power vectors of the remaining phases is zero.

Systems and methods for monitoring excitation of a generator based on a faulty status of a generator breaker are provided. According to one embodiment, a system may include a controller and a processor communicatively coupled to the controller. The processor may be configured to receive, from a contact associated with a generator breaker, a reported status of the generator breaker, receive operational data associated with one or more parameters of a generator associated with the generator breaker, and correlate the reported status of the generator breaker and the operational data. Based on the correlation, the processor may establish an actual status of the generator breaker, and, based on the actual status, selectively modify a mode of excitation of the generator.

A double fed induction generator (DFIG) converter method are presented in which rotor side current spikes are attenuated using series-connected damping resistance in response to grid fault occurrences or grid fault clearances.

An information handling system (IHS) employs a power fault protection circuit to protect the IHS from overvoltages which may occur on an information line from a power adapter to the IHS. The system includes a processor coupled to the protection circuit. The circuit is operative in a first mode to decouple an information line from the IHS in response to a disable command and operative in a second mode to decouple the information line from the IHS when a voltage in the information line exceeds a predetermined threshold voltage.

A vehicle coupling fault detecting system is disclosed. The system may include first and second selectively-pressurized fluid conduits containing first and second communication cables that are communicatively coupled when the first and second fluid conduits are connected together. A pressure sensor may detect a pressure within the fluid conduits when the conduits are connected together, and communicate a signal indicative of the pressure through at least one of the first and second communication cables. A controller may receive the signal and determine from the signal whether there is a fault in the connection between the first and second selectively-pressurized fluid conduits.

Disclosed are a circuit fault detection system and method for a circuit fault detection. A circuit fault detection system includes: a detection circuit including a diode, a first resistor, and a second resistor, which are positioned between an applied voltage source and a top of a detection target circuit in series, and a third resistor and a fourth resistor, which are positioned between the detection target circuit and a ground in series, an input unit including a first input terminal configured to receive a voltage measured between the first resistor and the second resistor as an input, and a second input terminal configured to receive a voltage measured between the third resistor and the fourth resistor as an input, a controller configured to detect a failure in the detection target circuit and in an operation of the detection target circuit based on values of the voltages detected by the input unit; and a display unit configured to provide a warning to a user when the failure is detected.

The invention concerns a method for locating a fault affecting an electrical appliance that comprises a communication interface and a female electrical connector, the female electrical connector comprising at least one conductive element mounted movable between an active position and a rest position, the female electrical connector comprising test means connected to the conductive element when same is in the rest position; the locating method comprising: a disconnection step; a test step consisting of testing the communication interface by cooperating with the test means of the female electrical connector; a locating step consisting of locating the fault in the electrical appliance or in an external element.

A ground fault circuit interrupter (GFCI) breaker testing system can include an enclosure having at least one wall that forms a cavity. The system can also include at least one GFCI breaker disposed within the cavity. The system can further include a sensing circuit assembly having at least one switch, where the at least one switch is electrically coupled to the at least one GFCI breaker. The system can also include a user interface assembly disposed, at least in part, outside the cavity, where the user interface assembly is coupled to the sensing circuit assembly, where the user interface assembly instructs the at least one switch to test the at least one GFCI breaker.

Rovio’s India head also said that the company wants to have its own retail store where it can sell Angry Birds merchandise such as shirts and stuffed toys.

Earlier, the loan default was estimated at over Rs 800 crore but scrutiny of documents by CBI revealed that the amount is much larger.

Care revised its rating on long-term securities to ‘B’ from ‘A+’.

Wednesday on Political Rewind , the pandemic reveals fault lines of unequal access in our society. Health care and community leaders are highlighting a disproportionate impact of the public health crisis on black and African American communities. We look at the contributing factors in Georgia and across the country.

WASHINGTON — The Small Business Administration did not direct private lenders to prioritize minority and women-owned businesses as Congress intended when they started implementing a $669 billion loan program under the CARES Act, a federal watchdog concluded in a report released Friday. The findings from the SBA Office of the Inspector General add to growing […]

COLUMBUS, Ohio (AP) — Logan Stiner was just days from high school graduation when his brother found him unresponsive in their family’s home southwest of Cleveland in May 2014. Stiner, 18, died of cardiac arrhythmia and seizure from acute caffeine toxicity, a coroner ruled. He had more than 70 micrograms of caffeine per milliliter of […]

The plot in Kristen Millares Young’s new novel centers around a history of storytelling in Neah Bay, with a quiet, powerful narrative that shakes readers like an earthquake.

St George Illawarra player Jack de Belin has withdrawn his legal challenge to the NRL's no-fault stand down policy, with his lawyers telling a Federal Court in Sydney there was "no utility" in proceeding.

Photos and documents show nurses in the Roy Fagan Centre for aged psychiatric patients use old pagers and duress buttons held together with sticky tape.

Energy Australia finds a unit controller at the Yallourn power station, Graeme Edwards, 54, was doing nothing wrong when he was fatally injured performing a routine task in November last year.

A school in the heart of the desert has been covered with thousands of icicles, as the mercury plummets to new lows across the the NT

She lost control of her car and swerved lanes, report says