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Snapchat
adding stickers easier access audio video conferencing ability leave audio video notes ability share recent camera photos.implementation features meant allow users easily shift text audio video chat needed retaining equal level functionality.june snapchat added feature deleting sent message including audio video text r...
Snapchat
january conference snapchat plans introduce endtoend encryption text messages group chats future.business multimedia demographics earliest days snapchats main demographic consisted generation z age group.app store age classification .researchers university washington seattle pacific university designed user survey help...
Snapchat
however appears snapchat used variety creative purposes necessarily privacyrelated all.study .respondents reported using snapchat primarily sexting although .admitted sent sexual content via snapchat point.findings suggest users seem utilize snapchat sensitive content.
Snapchat
rather primary use snapchat found comedic content stupid faces .respondents reporting use commonly.researchers also determined snapchat users use application types content willing send.found majority users willing send content classified sexting .respondents photos documents .
Snapchat
respondents messages containing legally questionable content .respondents content considered mean insulting .respondents.the study results also suggested snapchats success due security properties users found application fun.researchers found users seem wellaware .respondents recovering snaps possible majority users .
Snapchat
respondents report affect behavior use snapchat.many users .respondents found use arbitrary timeout length snaps regardless content type recipient.remaining respondents found adjust snaps timeout depending content recipient.reasons adjusting time length snaps included level trust relationship recipient time needed comp...
Snapchat
communication snapchat often seen represent new direction social media users craving inthemoment way sharing communicating via technology.less emphasis accumulation ongoing status involving presence permanent material snapchat put focus ephemeral nature fleeting encounters.building distinction launching mobilefirst com...
Snapchat
snapchat clear identifiable line drawn brand content userbased messaging sharing distinguishing popular app social media networks typically blended blurred different varieties content.monetization snapchats developing features embody deliberate strategy monetization.snapchat announced thenupcoming advertising efforts o...
Snapchat
initial launch partners included cnn comedy central espn food network among others.june snapchat announced would allow advertisers purchase sponsored geofilters snaps early customer offering mcdonalds paid branded geofilter covering restaurant locations united states.snapchat made push earn ad revenue live stories feat...
Snapchat
campaigns september service entered partnership national football league present live stories selected games including sunday game marquee games monday night football thursday night football parties contributing content handling ad sales.internet trends report mary meeker highlighted significant growth vertical video v...
Snapchat
content would include behindthescenes discover channel curated buzzfeed company nbcuniversal funded stories featuring combination footage nbc athletes attendees.nbc sold advertising entered revenue sharing agreements.marked first time nbc allowed olympics footage featured thirdparty property.may part campaign promote x...
Snapchat
later year september snapchat released first hardware product called spectacles.evan spiegel ceo snap inc. called “a toy” saw upside freeing app smartphone cameras.in april digiday reported snapchat would launch selfservice manager advertising platform.feature launched following month alongside news snapchat mobile das...
Snapchat
items sale include shirts mugs shower curtains phone cases.development platform june snapchat announced new thirdparty development platform known snap kit suite components allows partners provide thirdparty integrations aspects service.login kit social login platform utilizes snapchat accounts.promoted privacyconscious...
Snapchat
story kit used embed aggregate publicly posted stories example bandsintown using story kit aggregate stories posted musicians bitmoji kit allows bitmoji stickers integrated thirdparty apps.snap originals response industry competition streaming platforms netflix snapchat announced late would diversify content launching ...
Snapchat
premium accounts sexual content snapchat introduced new feature called snapcash spurred popularity among adult content creators.snapchat allows private premium accounts users monetize content.feature mostly used models monetize adult content.snapchat increasingly becoming integral part online porn industry.controversie...
Snapchat
december snapchat announced implemented mitigating features.nonetheless anonymous group hacked saying mitigating features presented minor obstacles.hackers revealed parts approximately .million snapchat usernames phone numbers website named snapchatdb.info sent statement popular technology blog techcrunch saying object...
Snapchat
federal trade commission snapchat settled complaint made us federal trade commission ftc.government agency alleged company exaggerated public degree mobile app images photos could actually made disappear.terms agreement snapchat fined app service agreed claims policies monitored independent party period years.ftc concl...
Snapchat
public blog post service warned youve ever tried recover lost data accidentally deleting drive maybe watched episode csi might know right forensic tools sometimes possible retrieve data deleted.windows app november snapchat announced crackdown thirdparty apps service users.users windows phone platform affected snapchat...
Snapchat
snapchat criticized later develop app microsofts universal windows platform uwp.lens incidents september yearold using snapchat feature called lens record speed driving mercedes c crashed mitsubishi outlander hampton georgia.mph kmh crash injured drivers.driver outlander spent five weeks intensive care treated severe t...
Snapchat
poor country remark according former snapchat employee anthony pompliano lawsuit filed snap inc. spiegel made statement snapchat rich people want expand poor countries like india spain.incident sparked twitter trend called uninstallsnapchat indian users uninstalled app caused backlash company terms low onestar ratings ...
Snapchat
pompliano said ceo evan spiegel dismissive concerns pompliano fired shortly thereafter.judge dropped pompliano’s claims snapchat violated doddfrank consumer protection acts retaliation citing arbitration clause contract.however snap inc. faced blowback lack disclosure regarding contents lawsuit resulting plunging stock...
Snapchat
map zoomed feature detailed geographical information street addresses.daily telegraph reported police forces issued child safety warnings media publications wrote safety concerns also raised teenagers adults unaware features actual behavior.statement verge snapchat spokesperson said safety community important us want m...
Snapchat
body image concerns increased use body facial reshaping applications snapchat facetune identified potential cause body dysmorphic disorder.august researchers boston medical center wrote jama facial plastic surgery essay phenomenon called snapchat dysmorphia identified people request surgery look like edited version app...
Snapchat
reached comment scientific american representatives snapchat declined share public response.revenge porn lockdown inhibit spread covid france app emerged hub dissemination revenge porn underage girls.in woman north carolina sued snapchat well dating app tinder five men named attack claiming features app enabled alleged...
Snapchat
dozen millennials explain theyre obsessed snapchat use it.business insider.axel springer se.retrieved april .external links official website
Private Disk
works creating virtual drive contents encrypted onthefly software use drive usual one.one private disks key selling points ease use achieved hiding complexity end user e.g.data wiping applied transparently encrypted image deleted.simplicity however reduce flexibility respects e.g.allows use aes encryption.although priv...
Building automation
private disk complies fips fips cbc mode secret ivs used encrypt sectors storage volumedisk firewall applicationlevel filter allows trusted programs access virtual driveability run directly removable drive requiring local installationoffers access encrypted data system even administrative privileges availableencrypted ...
Building automation
recent ieee standards notably ieee .. ieee ieee .ieee .ieee .ac ieee .at consortia efforts like nvoy verifies ieee .compliance qivicon provided standardsbased foundation heterogeneous networking many devices many physical networks diverse purposes quality service failover guarantees appropriate support human health saf...
Building automation
see home automation entry level systems nvoy .major proprietary vendors implement resist trend standards integration.almost multistory green buildings designed accommodate bas energy air water conservation characteristics.electrical device demand response typical function bas sophisticated ventilation humidity monitori...
Building automation
automation system term building automation system loosely used refers electrical control system used control buildings heating ventilation air conditioning hvac system.modern bas also control indoor outdoor lighting well security fire alarms basically everything else electrical building.old hvac control systems v dc wi...
Building automation
modern systems use snmp track events building decades history snmpbased protocols computer networking world.physical connectivity devices historically provided dedicated optical fiber ethernet arcnet rs rs lowbandwidth special purpose wireless network.modern systems rely standardsbased multiprotocol heterogeneous netwo...
Building automation
designed limited controls interoperability simple packaged roof top units hvac.software typically integrate well packages vendors.cooperation zigbeebacnetlontalk level only.current systems provide interoperability application level allowing users mixandmatch devices different manufacturers provide integration compatibl...
Building automation
examples temperature humidity pressure sensors could thermistor – – volt platinum resistance thermometer resistance temperature detector wireless sensors.a digital input indicates device off.examples digital inputs would door contact switch current switch air flow switch voltagefree relay contact dry contact.digital in...
Building automation
extremely costeffective operation useful identification detect startup transients line equipment faults etc.controls digital outputs control speed position device variable frequency drive ip current pneumatics transducer valve damper actuator.example hot water valve opening maintain setpoint.another example variable fr...
Building automation
another example would open valve allowing vdcac pass output powering valve.analog outputs could also pulse type outputs emitting frequency pulses given period time.example energy meter calculating kwh emitting frequency pulses accordingly.infrastructure controller controllers essentially small purposebuilt computers in...
Building automation
outputs allow controller send command control signals slave devices parts system.inputs outputs either digital analog.digital outputs also sometimes called discrete depending manufacturer.controllers used building automation grouped three categories programmable logic controllers plcs systemnetwork controllers terminal...
Building automation
installer typically selects one available preprogrammed personalities best suited device controlled create new control logic.occupancy occupancy one two operating modes building automation system.unoccupied morning warmup nighttime setback common modes.occupancy usually based time day schedules.occupancy mode bas aims ...
Building automation
bas often factors outdoor conditions historical experience optimize mwu.also referred optimized start.an override manually initiated command bas.example many wallmounted temperature sensors pushbutton forces system occupancy mode set number minutes.present web interfaces allow users remotely initiate override bas.some ...
Building automation
lighting lighting turned dimmed building automation lighting control system based time day occupancy sensor photosensors timers.one typical example turn lights space halfhour since last motion sensed.photocell placed outside building sense darkness time day modulate lights outer offices parking lot.lighting also good c...
Building automation
shading glazing shading glazing essential components building system affect occupants’ visual acoustical thermal comfort provide occupant view outdoor.automated shading glazing systems solutions controlling solar heat gains glare.refers use technology control external internal shading devices blinds shades glazing itse...
Building automation
dynamic shading dynamic shading devices allow control daylight solar energy enter built environment relation outdoor conditions daylighting demands solar positions.common products include venetian blinds roller shades louvers shutters.mostly installed interior side glazing system low maintenance cost also used exterior...
Building automation
external air needed keep buildings air healthy.optimize energy efficiency maintaining healthy indoor air quality iaq demand control controlled ventilation dcv adjusts amount outside air based measured levels occupancy.analog digital temperature sensors may placed space room return supply air ducts sometimes external ai...
Building automation
fans cavs variablespeed controls.instead cavs open close dampers watersupply valves maintain temperatures buildings spaces.heat cool spaces opening closing chilled hot water valves feed internal heat exchangers.generally one cav serves several spaces.variable volume airhandling units efficient unit variable air volume ...
Building automation
vavs supply pressurized air vav boxes usually one box per room area.vav air handler change pressure vav boxes changing speed fan blower variable frequency drive less efficiently moving inlet guide vanes fixedspeed fan.amount air determined needs spaces served vav boxes.each vav box supply air small space like office.bo...
Building automation
valves hot cold water opened closed based heat demand spaces supplying.heated vav boxes sometimes used perimeter interior zones cooling only.a minimum maximum cfm must set vav boxes assure adequate ventilation proper air balance.air handling unit ahu discharge air temperature control air handling units ahu roof top uni...
Building automation
vav hybrid systems another variation hybrid vav cav systems.system interior zones operate vav system.outer zones differ heating supplied heating fan central location usually heating coil fed building boiler.heated air ducted exterior dual duct mixing boxes dampers controlled zone thermostat calling either cooled heated...
Building automation
may supply chilled water system hot water system condenser water system well transformers auxiliary power unit emergency power.well managed often help other.example plants generate electric power periods peak demand using gas turbine use turbines hot exhaust heat water power absorptive chiller.chilled water system chil...
Building automation
chillers sequenced chill chilled water supply.a chiller refrigeration unit designed produce cool chilled water space cooling purposes.the chilled water circulated one cooling coils located air handling units fancoils induction units.chilled water distribution constrained foot separation limit applies dx systems thus ch...
Building automation
heat rejection chiller may way aircooled condenser cooling tower discussed below.vapor compression chillers may bundled aircooled condenser provide packaged chiller would installed outside building envelope.vapor compression chillers may also designed installed separate condensing unit normally chiller would installed ...
Building automation
condenser water supply chillers constant variable speed drives commonly used cooling tower fans control temperature.proper cooling tower temperature assures proper refrigerant head pressure chiller.cooling tower set point used depends upon refrigerant used.analog temperature sensors measure condenser water supply retur...
Building automation
analog temperature sensors placed hot water supply return lines.type mixing valve usually used control heating water loop temperature.boilers pumps sequenced maintain supply.the installation integration variable frequency drives lower energy consumption buildings circulation pumps using before.variable frequency drive ...
Building automation
variable frequency drives able decrease output energy consumption motors lowering frequency electricity provided motor however relationship motor output energy consumption linear one.variable frequency drive provides electricity motor hertz output motor hertz divided hertz ..energy consumption motor running hertz inste...
Building automation
example variable frequency drive needs power communicate building automation system run cooling fan etc.motor always ran variable frequency drive installed cost operation electricity consumption would actually go new variable frequency drive installed.amount energy variable frequency drives consume nominal hardly worth...
Building automation
little good detect potentially hazardous costly situation one solve problem notified.notification computer email text message pager cellular phone voice call audible alarm these.insurance liability purposes systems keep logs notified how.alarms may immediately notify someone notify alarms build threshold seriousness ur...
Building automation
example repeating critical alarm uninterruptible power supply bypass might resound minutes minutes every hours thereafter alarms resolved.common temperature alarms space supply air chilled water supply hot water supply.pressure humidity biological chemical sensors determine ventilation systems failed mechanically becom...
Building automation
modern systems typically use poweroverethernet operate pantiltzoom camera devices – watts capable charging batteries keeps wireless networks free genuinely wireless applications backup communication outage.fire alarm panels related smoke alarm systems usually hardwired override building automation.example smoke alarm a...
Building automation
poor bas almost definition sends one alarm every alert recognize manual fire electric fuel safety override.accordingly good bas often built safety fire systems.information security growing spectrum capabilities connections internet things building automation systems repeatedly reported vulnerable allowing hackers cyber...
Building automation
opening doors windows intruders.several vendors committees started improve security features products standards including knx zigbee bacnet see recent standards standard drafts.however researchers report several open problems building automation security.room automation room automation subset building automation simila...
Building automation
common room automation systems employ touchscreen primary way controlling operation.see also control engineeringdigital homeindex home automation articlessmart environmenttesting adjusting balancing protocols industry standards wirebacnetbluetoothdalidynetenoceaneubacknxlontalkmidacopcopenthermopenwebnetvscpzigbeezwave...
Building automation
recent ieee standards notably ieee .. ieee ieee .ieee .ieee .ac ieee .at consortia efforts like nvoy verifies ieee .compliance qivicon provided standardsbased foundation heterogeneous networking many devices many physical networks diverse purposes quality service failover guarantees appropriate support human health saf...
Building automation
see home automation entry level systems nvoy .major proprietary vendors implement resist trend standards integration.almost multistory green buildings designed accommodate bas energy air water conservation characteristics.electrical device demand response typical function bas sophisticated ventilation humidity monitori...
Building automation
automation system term building automation system loosely used refers electrical control system used control buildings heating ventilation air conditioning hvac system.modern bas also control indoor outdoor lighting well security fire alarms basically everything else electrical building.old hvac control systems v dc wi...
Building automation
modern systems use snmp track events building decades history snmpbased protocols computer networking world.physical connectivity devices historically provided dedicated optical fiber ethernet arcnet rs rs lowbandwidth special purpose wireless network.modern systems rely standardsbased multiprotocol heterogeneous netwo...
Building automation
designed limited controls interoperability simple packaged roof top units hvac.software typically integrate well packages vendors.cooperation zigbeebacnetlontalk level only.current systems provide interoperability application level allowing users mixandmatch devices different manufacturers provide integration compatibl...
Building automation
examples temperature humidity pressure sensors could thermistor – – volt platinum resistance thermometer resistance temperature detector wireless sensors.a digital input indicates device off.examples digital inputs would door contact switch current switch air flow switch voltagefree relay contact dry contact.digital in...
Building automation
extremely costeffective operation useful identification detect startup transients line equipment faults etc.controls digital outputs control speed position device variable frequency drive ip current pneumatics transducer valve damper actuator.example hot water valve opening maintain setpoint.another example variable fr...
Building automation
another example would open valve allowing vdcac pass output powering valve.analog outputs could also pulse type outputs emitting frequency pulses given period time.example energy meter calculating kwh emitting frequency pulses accordingly.infrastructure controller controllers essentially small purposebuilt computers in...
Building automation
outputs allow controller send command control signals slave devices parts system.inputs outputs either digital analog.digital outputs also sometimes called discrete depending manufacturer.controllers used building automation grouped three categories programmable logic controllers plcs systemnetwork controllers terminal...
Building automation
installer typically selects one available preprogrammed personalities best suited device controlled create new control logic.occupancy occupancy one two operating modes building automation system.unoccupied morning warmup nighttime setback common modes.occupancy usually based time day schedules.occupancy mode bas aims ...
Building automation
bas often factors outdoor conditions historical experience optimize mwu.also referred optimized start.an override manually initiated command bas.example many wallmounted temperature sensors pushbutton forces system occupancy mode set number minutes.present web interfaces allow users remotely initiate override bas.some ...
Building automation
lighting lighting turned dimmed building automation lighting control system based time day occupancy sensor photosensors timers.one typical example turn lights space halfhour since last motion sensed.photocell placed outside building sense darkness time day modulate lights outer offices parking lot.lighting also good c...
Building automation
shading glazing shading glazing essential components building system affect occupants’ visual acoustical thermal comfort provide occupant view outdoor.automated shading glazing systems solutions controlling solar heat gains glare.refers use technology control external internal shading devices blinds shades glazing itse...
Building automation
dynamic shading dynamic shading devices allow control daylight solar energy enter built environment relation outdoor conditions daylighting demands solar positions.common products include venetian blinds roller shades louvers shutters.mostly installed interior side glazing system low maintenance cost also used exterior...
Building automation
external air needed keep buildings air healthy.optimize energy efficiency maintaining healthy indoor air quality iaq demand control controlled ventilation dcv adjusts amount outside air based measured levels occupancy.analog digital temperature sensors may placed space room return supply air ducts sometimes external ai...
Building automation
fans cavs variablespeed controls.instead cavs open close dampers watersupply valves maintain temperatures buildings spaces.heat cool spaces opening closing chilled hot water valves feed internal heat exchangers.generally one cav serves several spaces.variable volume airhandling units efficient unit variable air volume ...
Building automation
vavs supply pressurized air vav boxes usually one box per room area.vav air handler change pressure vav boxes changing speed fan blower variable frequency drive less efficiently moving inlet guide vanes fixedspeed fan.amount air determined needs spaces served vav boxes.each vav box supply air small space like office.bo...
Building automation
valves hot cold water opened closed based heat demand spaces supplying.heated vav boxes sometimes used perimeter interior zones cooling only.a minimum maximum cfm must set vav boxes assure adequate ventilation proper air balance.air handling unit ahu discharge air temperature control air handling units ahu roof top uni...
Building automation
vav hybrid systems another variation hybrid vav cav systems.system interior zones operate vav system.outer zones differ heating supplied heating fan central location usually heating coil fed building boiler.heated air ducted exterior dual duct mixing boxes dampers controlled zone thermostat calling either cooled heated...
Building automation
may supply chilled water system hot water system condenser water system well transformers auxiliary power unit emergency power.well managed often help other.example plants generate electric power periods peak demand using gas turbine use turbines hot exhaust heat water power absorptive chiller.chilled water system chil...
Building automation
chillers sequenced chill chilled water supply.a chiller refrigeration unit designed produce cool chilled water space cooling purposes.the chilled water circulated one cooling coils located air handling units fancoils induction units.chilled water distribution constrained foot separation limit applies dx systems thus ch...
Building automation
heat rejection chiller may way aircooled condenser cooling tower discussed below.vapor compression chillers may bundled aircooled condenser provide packaged chiller would installed outside building envelope.vapor compression chillers may also designed installed separate condensing unit normally chiller would installed ...
Building automation
condenser water supply chillers constant variable speed drives commonly used cooling tower fans control temperature.proper cooling tower temperature assures proper refrigerant head pressure chiller.cooling tower set point used depends upon refrigerant used.analog temperature sensors measure condenser water supply retur...
Building automation
analog temperature sensors placed hot water supply return lines.type mixing valve usually used control heating water loop temperature.boilers pumps sequenced maintain supply.the installation integration variable frequency drives lower energy consumption buildings circulation pumps using before.variable frequency drive ...
Building automation
variable frequency drives able decrease output energy consumption motors lowering frequency electricity provided motor however relationship motor output energy consumption linear one.variable frequency drive provides electricity motor hertz output motor hertz divided hertz ..energy consumption motor running hertz inste...
Building automation
example variable frequency drive needs power communicate building automation system run cooling fan etc.motor always ran variable frequency drive installed cost operation electricity consumption would actually go new variable frequency drive installed.amount energy variable frequency drives consume nominal hardly worth...
Building automation
little good detect potentially hazardous costly situation one solve problem notified.notification computer email text message pager cellular phone voice call audible alarm these.insurance liability purposes systems keep logs notified how.alarms may immediately notify someone notify alarms build threshold seriousness ur...
Building automation
example repeating critical alarm uninterruptible power supply bypass might resound minutes minutes every hours thereafter alarms resolved.common temperature alarms space supply air chilled water supply hot water supply.pressure humidity biological chemical sensors determine ventilation systems failed mechanically becom...
Building automation
modern systems typically use poweroverethernet operate pantiltzoom camera devices – watts capable charging batteries keeps wireless networks free genuinely wireless applications backup communication outage.fire alarm panels related smoke alarm systems usually hardwired override building automation.example smoke alarm a...
Building automation
poor bas almost definition sends one alarm every alert recognize manual fire electric fuel safety override.accordingly good bas often built safety fire systems.information security growing spectrum capabilities connections internet things building automation systems repeatedly reported vulnerable allowing hackers cyber...
Building automation
opening doors windows intruders.several vendors committees started improve security features products standards including knx zigbee bacnet see recent standards standard drafts.however researchers report several open problems building automation security.room automation room automation subset building automation simila...
TCP offload engine
common room automation systems employ touchscreen primary way controlling operation.see also control engineeringdigital homeindex home automation articlessmart environmenttesting adjusting balancing protocols industry standards wirebacnetbluetoothdalidynetenoceaneubacknxlontalkmidacopcopenthermopenwebnetvscpzigbeezwave...
TCP offload engine
aspects includeconnection establishment using way handshake synchronize synchronizeacknowledge acknowledge.acknowledgment packets received far end adding message flow endpoints thus protocol load.checksum sequence number calculations burden general purpose cpu perform.sliding window calculations packet acknowledgement ...
TCP offload engine
ghz multicore processor required handle tcpip processing associated gbits tcpip traffic.since ethernet ge example bidirectional possible send receive gbits aggregate throughput gbits.using hzbits rule equates eight .ghz cores.many cpu cycles used tcpip processing freedup tcpip offload may used cpu usually server cpu pe...
TCP offload engine
reduction pci traffic addition protocol overhead toe address also address architectural issues affect large percentage host based server pc endpoints.many older end point hosts pci bus based provides standard interface addition certain peripherals network interfaces servers pcs.pci inefficient transferring small bursts...
TCP offload engine
introduced first parallelstack full offload network card early companys slic session layer interface card predecessor current toe offerings.alacritech holds number patents area tcpip offload.by emergence tcpbased storage iscsi spurred interest said least dozen newcomers founded toward end dotcom bubble chasing opportun...
TCP offload engine
tcp checksum offload large segment offload supported majority todays ethernet nics.newer techniques like large receive offload tcp acknowledgment offload already implemented highend ethernet hardware effective even implemented purely software.parallelstack full offload parallelstack full offload gets name concept two p...
TCP offload engine
vampire tap intercepts tcp connection requests applications responsible tcp connection management well tcp data transfer.many criticisms following section relate type tcp offload.hba full offload hba host bus adapter full offload found iscsi host adapters present disk controllers host system connecting via tcpip iscsi ...
TCP offload engine
tcp chimney partial offload tcp chimney offload addresses major security criticism parallelstack full offload.partial offload main system stack controls connections host.connection established local host usually server foreign host usually client connection state passed tcp offload engine.heavy lifting data transmit re...
TCP offload engine
connection closed connection state returned offload engine main system stack.maintaining control tcp connections allows main system stack implement control connection security.large receive offload large receive offload lro technique increasing inbound throughput highbandwidth network connections reducing central proce...
TCP offload engine
april linux kernel supports lro tcp software only.freebsd supports lro hardware adapters support it.lro operate machines acting routers breaks endtoend principle significantly impact performance.generic receive offload generic receive offload gro implements generalised lro software isnt restricted tcpipv issues created...