Can you ask for a compensation if the delay was due de-icing process?

I was talking to a friend recently and he referred he was in a delayed flight from Brussels a couple of weeks ago due to de-icing.

Basically the plane already had an initial delay to which summed up the need to apply liquid to avoid ice on the wings. The pilot said it hadn’t been done properly so they had to have it done a second time, which resulted in another wait of almost an hour.

Is he eligible for compensation or does this fall in the weather conditions situation. It’s not very clear, he arrived more than three hours late, and service at the airport was terrible, but in other hand one feels that safety should come first and companies shouldn’t have to weight about losing money on compensations vs safety.

How to disable symbols pop-up on long press on GBoard or make the key long-press delay really long?

I am trying to disable the symbol pop-up on long-press on GBoard in Android. My device is rooted. The link here shows how to increase GBoard height above the highest level by changes the preferences file at /data/data/ . However, I could fine no such setting for disabling the symbol pop-up. Another way to do this would be to increase the long-press duration to 2-3s instead of the deafult max of 700ms. However, there is again no setting in the preferences file related to this. Any suggestions if this is doable by modifying the system files in a rooted device or by any other method?

A file is sent from host A to client B, the packet passes through router R on its way to B. Calculate the total delay for the file to reach B

This is a question from an old exam that ive been trying to work out:

The 40000 bit file is split into 10 packets with a 400 bit header added to each packet The link from A to R is 500 km long and from R to B is 250 km long with a capacity of 2 Mbps for both links. The propagation speed is 250 000 km/s for both links. The router uses store and forward, do not account for checksum verification and delay from moving the packets to the correct outbound socket. A does not wait for ACK flags before sending the next packet.

My attempt:

40000/10 + 400=4400 bits per packet

Transmission delay(dtrans): 4400/2*10^6=0.0022 seconds (packet length/link capacity)

propagation delay between A and R(dpropAR): 500/250000=0,002 seconds

propagation delay between R and B (dpropAB): 250/250000=0,001 seconds

(link-length/propagation speed)

I’m having trouble putting the delays together. I believe it to be 10*(2*dtrans+dpropAR+dpropAB) but im getting the wrong answer.

My thinking: one transmission delay for A and one for B, thats 2*transdelay and one dpropAR and one dpropAB for each time the packet is sent to a node. All of that repeated 10 times over.

Is my approach somewhat accurate or am i going about this the wrong way?

Thank you.

Trocar background-image com delay via jQuery

Estou tentando fazer uma transição de imagens de fundo via jQuery, com efeito fade-in e fade-out e trocando essa imagem, abaixo segue o meu código.

$  (document).ready(function() {    $  ("#player").delay(500).animate({"opacity": "0"}, 1000);    $  ("#player").delay(1500).animate({"opacity": "1"}, 1000);    $  ("#player").delay(1500).css({'background-image': 'url("PLAYERS/ouro1.png")'}); //linha com problema } );
.image .player {    height: 600px;    width: 380px;    background-image: url("PACKS/P4.jpg");    display: flex;    justify-content: center;    align-items: center;    opacity: 1; }
<script src=""></script>  <div class="image">       <div class="player" id="player">       </div> </div>

Do jeito que está a imagem de fundo simplesmente não troca, mas o efeito fade-in e fade-out funciona.

Se eu trocar o “.css(” por “.qcss(” como achei de solução em outro problema, a imagem troca no momento e não faz o delay.

Network throughput with random delay selected from uniform distribution


I am working with IoT devices which broadcast status messages over a wireless channel periodically and at a rather high rate (500-5000 Hz). Receiving every message is not crucial but the more that are received, the better. I previously had nodes continuously synchronise clocks in order to adhere to a TDMA schedule, but this added significant algorithmic complexity to an application where 100% successful transmissions is not required. I am therefore trying a new approach based on random transmissions.

Problem Setup:

Let there be $ N$ nodes, and let each node broadcast a status message of duration $ A$ at least $ d$ microseconds after its previous transmission, and no more than $ D$ microseconds later. The exact delay for each packet is selected randomly and uniformly from the range $ [d, D]$ .

If packet $ k$ is transmitted from a node at time $ t_k$ , then the transmission time of the node’s next packet $ k+1$ is given by $ t_{k+1} = t_k + \mathcal{U}(d,D)$ .

The minimum delay $ d$ is a constant given by the time required for the IoT device to acquire a new measurement and schedule the next packet.

The maximum delay $ D$ is a variable which should be tuned to maximise network throughput (akin to ALOHA).


I’m trying to derive an expression for the network throughput.

I can’t find any material on ALOHA with periodic transmissions, and can only find material where the probability of transmitting is poisson, and where each transmission is independent of the last.

Thank you for your help in pointing me in the right direction.

Delay in the UK visa process Priority Service

I have applied and finished the biometric process more than a week ago. I paid extra money for the priority service and according to the web site, I should have received an answer within 5 working days. However, after a week I am still waiting for a response and I have to be in the UK next week.

Does anyone have any similar experience lately? I am a student from the middle east living in Switzerland. This is my third time to apply for the UK visa. The last two cases were handled quite smoothly and timely.

How long should the delay be before a tooltip pops up?

I’m working on web site in which a “ribbon” submenu pops up as soon as the mouse touches one of the main menu items. I’m trying to explain to the designer that it should wait until the cursor has rested on the menu item, and not pop up when the mouse just happens to pass over it. I’m not sure how long (in milliseconds) that wait should be.

I can’t link to the web site in question, but I figure the same principle applies to standard tool tips. How long should it take for a tool tip to pop up?

Suddenly there is a slight delay when bringing up spotlight

I copied all my data to an external hard drive and used that as my main hard drive for a few days. After that I noticed a slight delay when bringing up spotlight, so that when I search for “Safari”, it searches for “fari” instead, as I am used to being able to start typing close to instantly.

I just associated that with the fact that booting from an external drive is slower, however, even now when I have copied the data to my internal drive and even when boot from that, the delay persists. I have reindexed my drive twice.

EU flight delay compensation for multi-leg trip

i have a question about compensation under EU laws for my flight. We booked tickets from Venice to Lima with Air Canada. We had two layovers, first in Brussels and second in Montreal. Our forst two flights were on time, but last one (Canada-Peru) was delayed by 4 hours. Ar we still eligible for compensation even if delay happend outside of EU, since our original ticket is from Italy? All tickets were bought on the same reservation made directly with Air Canada, they were not bought as part of multi city trip or anything like that.

Thanks for your help