This disclosure describes methods, devices, and systems related to an OFDMA Distributed Channel Access. Devices are disclosed comprising: at least one processor; and at least one memory that stores computer-executable instructions, wherein the at least one processor is configured to access the at least one memory and execute the computer-executable instructions to identify a trigger frame received on the communication channel from the computing device. The at least one processor may determine an uplink frame to be sent to a computing device on a communication channel. The at least one processor may identify one or more random access resource allocations, wherein the one or more random access resource allocations are associated with the trigger frame. The at least one processor may assign a respective numerical value to each of the one or more random access resource allocations. The at least one processor may also select a numerical value based at least in part on a probability distribution. The at least one processor may also determine a particular resource allocation of the one or more random access resource allocations that corresponds to the numerical value. The at least one processor may also cause the uplink frame to be sent to the computing device using the particular resource allocation.

A technique for emulating virtual port control of airtime fairness for wireless stations using per station Enhanced Distributed Channel Access (EDCA) parameters. Specific parameters are received for each of a plurality of stations connected to the access point. An EDCA field of a beacon that stores a general EDCA parameter is set to an empty state. The beacon is broadcast to a plurality stations on the wireless communication network and within range of an access point. The beacon comprises a BSSID (Basic Service Set Identifier) for use by the plurality of stations to connect with the access point for access to the wireless communication network. The beacon also comprises an empty EDCA field. In response to broadcasting the empty EDCA parameter, receiving a direct inquiry from each of the plurality of stations for the general EDCA parameter. Each of the plurality of stations is responded to with a direct communication of a specific parameter corresponding to each station. A transmission is received from at least one of the stations complying with the specific parameter.

A system and method detects malware on client devices based on partially distributed malware definitions from a central server. A server stores malware definitions for known malware. The server generates one or more filters based on the malware definitions and distributes the filter(s) to client devices. The server also distributes full definitions to the clients for a subset of the most commonly detected malware. The client device scans files for malware by first applying the filter to a file. If the filter outputs a positive detection, the client scans the file using the full definition to determine if the file comprises malware. If the full definition is not stored locally by the client, the client queries the server for the definition and then continues the scanning process.

A planning and guiding method and excavation guiding device correctly implant an artificial tooth root at a predetermined site, perform various excavation processes on a cortical bone section and a spongy bone section by stage-based guidance, and guide eccentric excavation of the cortical bone section and concentric excavation of the spongy bone section according to a bone pattern, such that the artificial tooth root thus implanted is not only positioned at a planned ideal site but also manifests appropriate initial stability.

A three-dimensional (3D) scanner device for generating a three dimensional (3D) surface model of shaped objects, such as dental structures, applicable for use in the field of dentistry, particularly to dental prosthetics manufacturing is described. The scanning device can include a probe head having a particular configuration and utility. Methods and systems relating to the device and components thereof are also disclosed.

The present disclosure is directed to multichannel transducer devices and methods of operation thereof. One example device includes at least two acquisition modules that have different sensitives and a signal processing stage that generates a blended signal representative of a lower gain signal mapped onto a higher gain signal. One example method of operation includes receiving a first signal from a first sensor having a first sensitivity, receiving a second signal from a second sensor having a second sensitivity that is different from the first sensitivity, generating a blended signal by mapping the second signal to the first signal, outputting the first signal while the first signal is below a first threshold and above a second threshold, and outputting the blended signal when the first signal is above the first threshold and when the first signal is below the second threshold.

A device for extraction of pollutants by multichannel tubular membrane containing at least one fluid channel allowing the fluid to go through a feed inlet to an outlet end characterized in that membrane comprises at least an extraction channel filled with molten salt in order to adsorb said pollutants having to be extracted from the said fluid. Advantageously, the membrane is a ceramic membrane. An application is for the treatment of traces of pollutants in a liquid or gaseous fluid. For example, the removal of small pollutants as volatile organic compounds from an aqueous stream in industrial wastewater treatment or other water treatment applications, or the separation of aromatic compounds form an hydrocarbon feed in petrochemical applications. Another application is in the removal of water traces in products of high added value as pharmaceutical, cosmetic or biocarburant for example.

In an apparatus for controlling an unmanned autonomous operating vehicle having an electric motor supplied with power from a battery for operating an operating machine, and magnetic sensors for detecting intensity of a magnetic field of an area wire and controlled to run about in an operating area defined by the area wire through wheels driven by the prime movers to perform an operation using the operating machine and to return to a charging device installed on the area wire so as to charge the battery, there is provided with a turn-back portion formed by bending the area wire at an appropriate position and again bending the area wire to return in a same direction with a predetermined space so as to divide the operating area into a plurality of parts and vehicle running is controlled to be prohibited from going across the turn-back portion.

A semiconductor device is provided that includes an n-type field effect transistor including a plurality of vertically stacked silicon-containing nanowires located in one region of a semiconductor substrate, and a p-type field effect transistor including a plurality of vertically stacked silicon germanium alloy nanowires located in another region of a semiconductor substrate. Each vertically stacked silicon-containing nanowire of the n-type field effect transistor has a different shape than the shape of each vertically stacked silicon germanium alloy nanowire of the p-type field effect transistor.

An apparatus may include a plurality of antenna elements forming an antenna array. The apparatus may further include a beamformer that determines one or more of phase and amplitude shifts to cause the plurality of antenna elements to produce a beam in the direction of a target. The apparatus may further include a null limiter comprising dither circuits. The dither circuits may dither the one or more of phase and amplitude shifts by adding noise to cause a side lobe of the beam to increase above a threshold value. The dither circuits may be enabled by a control signal, and the dithered one or more of phase and amplitude shifts may be provided to the antenna elements to produce the beam in the direction of the target with the side lobes above the threshold value.

Embodiments are described for a closed-loop, vertical garden system for growing plants and filtering air and water comprising: a support structure; a composite, grow media configured to physically support the growth of plants and distribute water to the roots of the plants through capillary action through the area of the grow media; a water source coupled to the grow media through a pump and plumbing system, wherein the plumbing system is configured to draw water from the water source through the grow media and back to the water source in substantially closed loop aquatic system; and an air flow subsystem configured to draw outside air through the plants and transmit filtered air back out of the support structure.

Provided is a high-strength cold-rolled steel sheet having excellent ductility and stretch-flangeability as well as weldability in a range in which a tensile strength is 980 MPa or higher and a 0.2% yield strength is less than 700 MPa (preferably 500 MPa or higher). In the high-strength cold-rolled steel sheet of the present invention, the chemical composition is adjusted as appropriate, and the area ratio of below-mentioned metal structures at a position of ¼ sheet thickness in the steel sheet satisfies following requirements: tempered martensite: 10 area % to less than 30 area %, bainite: more than 70 area %, total of tempered martensite and bainite: 90 area % or more, ferrite: 0 area % to 5 area %, and retained austenite: 0 area % to 4 area %. The high-strength cold-rolled steel sheet has excellent ductility, stretch-flangeability, and weldability, and has a tensile strength of 980 MPa or higher and a 0.2% yield strength of less than 700 MPa.

The present invention mainly provides a novel microchannel structure comprising a plurality of first fluid-guiding channels, a plurality of micro fluid-guiding channels and a plurality of second fluid-guiding channels. Particularly, the first fluid-guiding channel has an arc-shaped fluid-guiding end corner communicating with a first channel opening of the micro fluid-guiding channel, and the second fluid-guiding channel has an arc-shaped fluid-guiding start corner communicating with a second channel opening of the micro fluid-guiding channel. Therefore, when a refrigerant fluid flows in the heat sink, the flow speed of the refrigerant fluid would be changed because the cross sectional area of an U-shaped fluid-guiding channel constructed by the arc-shaped fluid-guiding end corner, the micro fluid-guiding channel and the arc-shaped fluid-guiding start corner varies along the flow direction of the refrigerant fluid, such that the heat dissipating ability of the heat sink is enhanced without increasing the power of circulation pump.

A switch-scanning circuit includes a chip and switching units. The chip includes pins having an output operation mode and an input operation mode, and a processing unit. The processing unit sets one of the pins as an input pin and the rest of the pins as output pins sequentially according to a clock signal, uses a scan signal to provide different voltages to the output pins, and then determines states of button switches according to a voltage of the input pin. The switching unit includes a power source resistance, switches and resistors. A first terminal and a second terminal of the power source resistance are electrically connected to a power source and a first pin respectively. The resistors have terminals electrically connected the first pin and terminals of the switches. The other terminals of the switches are connected to the pins other than the first pin.

The present disclosure pertains to systems and methods for monitoring a plurality of analog-to-digital converters. In one embodiment, a plurality of input channels may each be in communication with a different phase of a three-phase electric power delivery system. The input channels may be configured to receive analog signals from the different phases. A composite signal subsystem may be configured to generate a composite signal based on the plurality of input channels. An analog-to-digital converter subsystem may be configured to produce a digitized representation of each of the plurality of input channels and a digitized representation of the composite signal. An analog-to-digital converter monitor subsystem may identify an error in the analog-to-digital conversion based on the digitized representation of the composite signal and the digitized representations of the plurality of input channels.

No, Weed Does Not Cure the Virus To a degree perhaps not before seen in modern history, the COVID-19 pandemic is revealing a lot of people and institutions for what they really are, good and bad. Cold, hard reality has a way of doing that.…

It might just be a distinction without a difference. Is cannabis really an "essential" business? The food business obviously is. But the legal cannabis industry didn't exist a few years ago, while gathering and making food — contrary to the popular cliché about prostitution — is the world's oldest profession.…

An inner cannula (20) for a tracheostomy tube assembly includes a thin, inner sheath (22) supported externally by a structural frame (23) having a longitudinal portion (25) and a plurality of ribs (26) extending circumferentially and spaced along the cannula. The inner cannula (20) is inserted within and is removable from an outer tracheostomy tube (1). The inner cannula (20) is made by coating a plastic layer on a core to form the sheath and then placing the sheath on a curved core. The structural frame (23) is then moulded about the sheath (22) in a mould 80.

An assembly is provided for interfacing with a microfluidic chip having at least one microscopic channel configured to receive a liquid sample for analysis. The assembly includes a chip carrier, an electronics module, an optical module, and a mechanical module. The chip carrier includes a base and a cover defining a cavity to receive the microfluidic chip. The electronics module includes a signal generator which applies at least one electrokinetic signal electrode(s) of the chip. The optical module includes an excitation radiation source which causes excitation radiation to impinge on the sample, and an emission radiation detector which detects radiation emitted from the sample. The mechanical module includes a chip-carrier receiving structure, relatable with respect to the optical module for focus and at least one degree of translational freedom.

The present disclosure provides a multi-channel parallel optical transceiver module. The disclosed optical transceiver module/device may include a shell body and a circuit board located in the shell body, and an optical emitter base soldered to a first end of the circuit board. A notch located on the base, for engaging the first end of the circuit board, and the optical emitter base engaged with the first end of the circuit board may be soldered to two sides of the circuit board. The optical emitters may be disposed in parallel on the base, and separated from each other by a block. A lens and a laser may be disposed at a first side of each of the optical emitters that is adjacent to the circuit board, and an optical monitor may be disposed on a second end of the circuit board adjacent to the laser.

News, arts, and dining coverage for Oakland, Berkeley, and the greater East Bay.

A tangential filter for filtration of a fluid includes a support element, wherein, along a transverse plane perpendicular to the central axis of the support element a) the support element includes in its central portion only inner channels that do not share a common wall with its outer surface, the inner channels having a substantially equivalent hydraulic diameter, b) the support element includes peripheral channels, including at least first and second adjacent peripheral channels, each of the two channels sharing a common wall with the outer surface, c) the ratio of the hydraulic diameter of the first channel to the hydraulic diameter of the second channel is greater than or equal to 1.1, d) the number of peripheral first channels is greater than or equal to the number of peripheral second channels, e) the second channel has a hydraulic diameter substantially identical to the hydraulic diameter of the inner channels.

Uptown Oakland's alaMar Kitchen & Bar will celebrate its sixth anniversary this Friday, May 1, with a contactless, social-distancing, Covid-19-crisis parade.

"In celebration of this milestone, we are asking all of our fans and supporters to parade in the safety of their cars," management announced in a press release today.…

Embodiments are generally directed to cooling of electronics using folded foil microchannels. An embodiment of an apparatus includes a semiconductor die; a substrate, the semiconductor die being coupled with the substrate; and a cooling apparatus for the semiconductor die, wherein the cooling apparatus includes a folded foil preform, the folded foil forming a plurality of microchannels, and a fluid coolant system to direct a fluid coolant through the microchannels of the folded foil.

A COUNCIL has announced schools across Hampshire will continue to support children throughout the Easter holidays in a bid to tackle the coronavirus crisis.

ONE of Hampshire's top independent preparatory schools has appointed a new headteacher.

Street Fighter 30th Anniversary Collection is a love letter to the venerable franchise that both fans and newcomers alike will not want to miss.

A WOMAN has been banned from the road for drug driving.

THE largest producing community theatre in Europe is looking forward to a season of new plays in 2021.

Former Saints star Mark Dennis was in tears of pride after watching his grandson win the Junior ABA title.

A CULTURAL trust is inviting Hampshire residents to mark the 75th anniversary of VE Day.

The South Coast Development Team at Savills has successfully sold Southbrook Rise, the former council offices in Southampton, with planning permission for 60 flats.

PLANNERS last night backed three major waterfront developments that are set to change the face of Southampton’s waterfront.

Bandai Namco announced they are collaborating with Aardman Studios and game studio DigixArt on WWI game 11-11: Memories Retold.

A second win in three matches has given Romsey hope of avoiding the drop into the Hampshire League.

ROMSEY’S £86,000 tribute to horses that died in the Great War has been give royal approval.

IT was a moving Hampshire tribute to remember those who died in the Battle of the Somme.

THIS fine country farmhouse in the New Forest is on the market for £2.25 million

In this podcast, Thomas Domville introduces us to Voice Dream Scanner, a recently released OCR app for iOS from the developer of the popular Voice Dream Reader app.

From the App Store:

Scan paper documents with the camera and recognize text. Listen using built-in text-to-speech. Save and export. Unlimited use: no subscriptions or additional charges.

State-of-the-art A.I. for OCR and text recognition: Fast and accurate, even in poor lighting conditions. Works entirely on device: No need for internet and your data stays private.

Export scans as plain text or PDF with embedded text to another app, or save them on your local device, iCloud, Dropbox, or Google Drive.

Works with Voice Dream Reader, our full-featured text-to-speech reader. After downloading this app, you will be able access the scanner directly from Reader and add scanned documents to your Reader library.

Dive in with Thomas Domville as he listens to the LIVE actions as they happen with Scanner Radio for iOS. A free app that you don't want to miss out that brings a wide range of scanner feeds to follow and listen such as Police, Fire, EMS, Railways, Aviation, Marine and others that may interest you.

Scanner Radio: Police & Fire on the App Store
https://apps.apple.com/us/app/scanner-radio-deluxe/id498405045

Are you receiving too many announcements from Apple? Have no fret as Thomas Domville shows us how to stop Apple notifications for announcements, special offers, music, TV and more. So, take in charge of your subscriptions as you can disable these types of notifications or pick and choose which you want to keep receiving.

Two major Connecticut banks announced Tuesday they will merge in a $759 million deal.

The Stamford Symphony Orchestra has launched its very own video channel as a way for the musians to connecct with audience members from around the world. Kate Remington talks with Music Director Designate Michael Stern about the diverse videos on the channel, and the most recent project featuring musicians in the orchestra and soloists of next season coming together to perform Amazing Grace , dedicated to all healthcare workers in Fairfield County on the frontlines during the COVID-19 crisis.

Updated at 5:02 p.m. ET It was supposed to be a day of parades, a vast party that would transcend borders and bring generations together, not unlike the spontaneous euphoria that swept through victorious European allies when Nazi Germany finally surrendered. But instead of a mega-event, leaders in London, Paris, Moscow and other capitals, observed the 75th anniversary of V-E Day at a diminished level Friday due to the COVID-19 pandemic. French President Emmanuel Macron led a small ceremony at the Arc de Triomphe, looking out over an empty Champs-Élysées. A 93-year-old veteran of World War II observes a moment of silence at the Cenotaph war memorial in London, where British residents — like much of Europe — marked a subdued 75th anniversary of V-E Day. Daniel Leal-Olivas / AFP via Getty Images Because of health risks the disease poses to older people, many veterans of the war were forced to avoid travel and keep their distance at public gatherings. "The veterans are of course getting

Many factors have shaped jazz in Ann Arbor, but trumpeter and educator Louis Smith has to be at the top of the list for modern jazz and education. Sean Dobbins , Rick Roe, Justin Walter and Ingrid Racine will testify to his grace, wisdom, strength and total honesty as a teacher. He encouraged a professional attitude and exponential musical growth from middle school students. His students could play rings around others years older!

If you want to know where jazz is going today, you must check in with the next generation of musicians who are taking it in new directions. One such musician is pianist, vocalist, lyricist, and composer Hannah Baiardi. Hannah is in her fifth year of studying jazz and improvisational music at The University of Michigan with the esteemed professional music faculty including Ellen Rowe, Benny Green and Dennis Wilson. Hannah has taken full advantage of the opportunities at UM. That means she was able to record in the outstanding studios of The Duderstadt Center.

Senator Rich Funke of Rochester is the latest Republican lawmaker to announce he will not seek reelection. Funke joins a growing list of seven other minority party GOP senators who say they are moving on to other things, after less than a year under Democratic rule in the Senate.

The Ann Arbor Independent Community Police Oversight Commission continues to operate during the COVID-19 crisis. Their focus has changed a bit during the pandemic.

Saying it would be “impractical and implausable to maintain social distancing” due to COVID-19, the Ann Arbor Summer Art Fair has been cancelled this year, July 2020. WEMU's Lisa Barry talks with Maureen Riley, the executive director of the Ann Arbor Art Fair-The Original, about all that went into making the very difficult decision to cancel the annual Ann Arbor Art Fair.

The City of Ann Arbor is in the process of creating a plan to make sure residents have social distancing options when it comes to being outdoors.