As a social network owned by Internet giant Google, Google+ has been expected to "count against Facebook" since its launch. Google itself has spared no effort in promoting Google+: even integrating Google+ with its most proud search engine, launching GooglePlusYourWorld; letting every new user who signs up for a Google account open their own Google+ page.
Google is so high-profile in promoting Google+, but it is "very stingy" in terms of disclosing Google+ related data. After the official launch of Google+, the data provided by Google is always only the number of users ("170 million users have upgraded to Google+"), and the data on user activity - the two words, no.
In February of this year, comScore, a well-known data research company, published a set of data, saying that Google+ users only stayed on the site for 3.3 minutes on average, far less than Facebook's 7.5 hours. After that, Google+ was called "virtual ghost town".
Recently, another data analysis company, RJMetric, disclosed another set of data about Google+ to FastCompany. This set of data estimates that Google will be very upset (and in fact) because it shows the fact that users are increasingly interested in Google+, "weak" user engagement, and very few social activities.
RJM randomly selected 40,000 Google+ users as a sample to conduct a follow-up survey, and finally got the following data:
· The average number of +1s, shares, and replies to the publicly visible Post on Google+ is less than 1.
· About 30% of users will not send a second after posting the first public post.
· Even if a user has sent five public posts, there is a 15% chance that they will not post.
· The average interval between users before and after Post is up to 12 days.
· After the user posted the first public post, the average number of posts in the following period showed a downward trend.
Regarding this data, it is worth mentioning that due to Google+’s circle function, RJM can only monitor the publicly visible dynamics of Google+ users, which is precisely why Google’s comments on the survey were quite sloppy. Google made a statement about this:
This survey report is flawed and it does not accurately show all of the sharing dynamics on Google+. As we said before, the number of private shares that occur in a user’s circle exceeds the number of public shares. The beauty of Google+ is that it allows you to share privately, and you don’t have to share your thoughts, photos and videos with the world.
Still, people tend to believe what they can see. Danny Sullivan, an expert focused on the search field, published a book called "If Google's Really Proud Of Google+, It Should Share Some Real User Figures" on April 12 ("If Google really feels so proud of Google+, then it will The article that should share real user data" details the issue of Google+. Regarding Google’s refusal to share data about Google+, he believes that it’s likely that Google+ has not reached the level of activity that a social network should have. Perhaps this conclusion is also what most people think about this matter? Since Google is reluctant to provide relevant data for various reasons, the public can only hope for third-party data research companies. Isn’t Google going to argue every time that something less than good-looking data is revealed?
The optical module (optical module) is composed of optoelectronic devices, functional circuits and optical interfaces. The optoelectronic device includes two parts: transmitting and receiving.
Simply put, the function of the optical module is to convert the electrical signal into an optical signal at the transmitting end, and after transmitting through the optical fiber, the receiving end converts the optical signal into an electrical signal.
The optical module is an optoelectronic device that performs photoelectric and electro-optical conversion. The transmitting end of the optical module converts electrical signals into optical signals, and the receiving end converts optical signals into electrical signals. Optical modules are classified according to the packaging form. Common ones include SFP, SFP+, SFF, Gigabit Ethernet Interface Converter (GBIC), etc.
The transmitting part is: the electrical signal with a certain code rate is processed by the internal drive chip and then drives the semiconductor laser (LD) or light-emitting diode (LED) to emit the modulated light signal of the corresponding rate. The internal optical power automatic control circuit makes The output optical signal power remains stable.
The receiving part is: the optical signal of a certain code rate is input into the module and then converted into an electric signal by the light detection diode, and the electric signal of the corresponding code rate is output after the preamplifier.
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