Wikipedia:Reference desk/Archives/Computing/2019 August 7

= August 7 =

Recent percentages of mobile users of Wikipedia?
I’ve found some stats circa 2013/2014 about how many mobile users and editors are on English Wikipedia in particular. Anyone have much more recent ones? Gleeanon409 (talk) 05:27, 7 August 2019 (UTC)
 * Your question is somewhat unclear. For users assuming you mean readers, it's not possible to know if someone is exclusively using mobile devices, exclusively using desktop devices or a mixture of both given the lack of accounts and data sharing with third parties who try to keep track of people. But for page views split between the mobile and desktop site, see |bar|2-year|access~desktop*mobile-app*mobile-web|monthly. For number of unique devices, see |line|2-year|access-site~mobile-site*desktop-site|monthly. Note that these are split by the websites https://en.m.wikipedia.org and https://en.wikipedia.org . By design, it's relatively trivial to switch between these whatever your device. While it is possible to also differentiate by user agent, which is something which can be changed but I suspect few enough people do it that you'll probably get answers within 10%, I don't believe those stats are collected any more. [//stats.wikimedia.org/wikimedia/squids/SquidReportUserAgents.htm]. For editors, while it would be possible to collect stats on a per account basis (an editor can have multiple accounts under some circumstances and these are not necessarily marked as associated in a simple way), this would very likely violate the WMF's privacy policy. You could collect stats for edits per site, but I couldn't seem to find them. Nil Einne (talk) 10:56, 7 August 2019 (UTC)
 * Nice graph of page views stats by access method. Alas, due to the lack of a legend, I can only try to  guess which color is which category.  Same issue with mobile vs. desktop. :( The table at the third link is so wide that I can see only a third part of it at a time after zooming-in to make digits readable on my phone. --CiaPan (talk) 12:21, 7 August 2019 (UTC)

What items will be required for separate IP camera network that can be accessed from Intranet ?
The cameras are 15 in nos and spread over 1 km radius? Please help me with switch Layer 3 switch specification/ SFP port module 12 core SM OS2 cable /PoE splitter/injector HD IP camera models/NVR specification required for this.All the IP cameras ,NVR should be in a separate LAN or subnet so that people from the pre-existing Intranet or LAN cannot access the cameras or the NVR cannot be accessed without logging in with user name password by select authorized personnel like visting webpage in the Internet with a mandatory signin and the IP HD cameras are to be located at various geographical locations mutually at 500 to 1km to 1.5 Km distance.Please advice in view of this.The pre-exsisting intranet has a Cisco 2960 series switch where single mode 12 core OFC comes from different 500 to 1km to 1.5 Km distance before going to a Sophos Cyberoam UTM port which has also a port where MPLS VPN cable enters for connecting the local LAN intranet with its head office counter part 300 miles away.The local intranet users can access internet through two leased line connections from two separate ISPs.Thera is a APV 2600 load balancer Array where these ISP connection enter along with local LAN cum intranet.There is a Layer switchin another building and a core switch also in a second building because there is a separate subnet of devices collecting serial data which after conversion is fed in real time fed to the server in this Intranet through a Gigabit switch.Similarly IP cameras will form a seperate isolated subnet which cannot be accessed by regular users but data will be transferred to the NVR in the preexisting Intranet so that only select users can view it. NVR will also be password protected.What will be technical requirements of the switch POE,single mode 12 core OS2 cable for proper surveillance with about 15 IP cameras at mutuALLY 500M TO 1.5 km distance.I don't want any brand/product recommendation but I am seeking your guidance advice and knowledge on technical requirements .Please lift the off topic block and please help me with your answer and knowledge and explanation.As a novice also want to know what is use of the 12 cores of single mode OS2 OFC. Will each core be terminated with a pigtail LC connector to fiber distribution box also known as fiber patch panel and then to fiber termination box and from there fiber core will be spliced with another duplex LC connector to the 12 SFP ports of the 24 port un-managed ethernet switch via 12 single mode SFP modules.12 SFP ports through the 12 cores of same single continuous OS2 SM fiber and the the 12 cores will end at a fiber distribution box also known as light guide interconnect unit or fiber patch panel by splicing with duplex LC pigtails and from there via 12 LC LC patch cords to fiber termination box and from via 12 duplex LC -SC patch cable will connect to 12 SFP ports of the ethernet switch.This scheme will be followed for connecting two buildings separated by say 800m to1 or 1.5 km but having computers belonging to the same subnet as all computers in the local intranet are part of 1 subnet I cannot find anywhere on the net what purpose the individual cores of the multi single mode OFC serve what is use of multi-core i guess trwo long distance ethernet switch's SFP ports coomunicate by each core of a single SFP so for 24 port switch with say 12 SFP ports can communicate with another such 24 port switch 12 SFP ports through the 12 cores of same single continuous OS2 SM fiber and the the 12 cores will end at a fiber distribution box also known as light guide interconnect unit or fiber patch panel by splicing with duplex LC pigtails and from there via 12 LC LC patch cords to fiber termination box and from via 12 duplex LC -SC patch cable will connect to 12 SFP ports of the ethernet switch.This scheme will be followed for connecting two buildings separated by say 800m to1 or 1.5 km but having computers belonging to the same subnet as all computers in the local intranet are part of 1 subnet.Wrogh456 (talk) 17:32, 7 August 2019 (UTC)


 * I suggest a diagram to make this all clear. Your idea of using fiber optics may be good, depending on the length of each segment. But, if the individual run lengths are low enough, copper would be less expensive. A diagram with distances noted would therefore help, since you seem to be near the transition point where you would want to switch between copper and fiber . Note that copper wire will also be required to power the cameras and boost the signal, unless you want to use solar panels and batteries (or use batteries alone and go around to recharge them periodically).


 * You might also consider eliminating the cables entirely, to use cell phone technology to transmit the video. This would, of course, require batteries and some method to recharge them, but would offer a much lower startup cost. To conserve power and limit data charges, you could have it only send video when requested. So, basically when you called the number and provided a password, it would turn the camera on and send the video to the caller, until the caller hangs up. A server in one of the two buildings could make those calls and post the video to the intranet, when video from that site is requested. This approach is inherently less secure, so if it would be a disaster if those videos ever get out, then this approach might be less attractive. SinisterLefty (talk) 17:40, 7 August 2019 (UTC)