November 2017 – Spinor Info

Another piece of music I cannot identify

Nov 302017

Here is a short segment from a piece of music that I am trying to identify:

For the life of me, I cannot. It is especially annoying because I heard this piece of music on SiriusXM Symphony Hall earlier this morning, but I didn’t get the title and cannot find a playlist.

This music was played during the end credits of the main evening newscast in the 1960s, perhaps the early 1970s, on Hungary’s state owned television network.

Update (Dec 3, 2017): Mystery solved. It is the Scherzo from Schumann’s 2nd symphony:

South Park cantaloupe

Food, Personal, Television No Responses »

Nov 282017

The other day, I bought a cantaloupe for my wife.

Today, as she was about to cut it in half, she noticed that it had two sticker labels. Not only that, but held just the right way, the thing looked just like a character from South Park:

Bon appétit.

Have they taken sci-hub down?

Intellectual Property, Internet No Responses »

Nov 272017

Recently, I was looking at the registration of sci-hub.io in light of a recent US court decision, and the well-known Russian pirate site hosting illicit copies of millions of scientific papers was still working fine.

Not anymore. That address appears to have been taken down, but an alternative seems to be working fine:

$ nslookup sci-hub.bg
Server: 127.0.0.1
Address: 127.0.0.1#53

** server can't find sci-hub.bg: NXDOMAIN

$ nslookup sci-hub.bz
Server: 127.0.0.1
Address: 127.0.0.1#53

Non-authoritative answer:
Name: sci-hub.bz
Address: 104.28.21.155
Name: sci-hub.bz
Address: 104.28.20.155

Wonder how long before they take the .bz address down, too.

Vacuum cleaner modding

Handyman, Hungary, Personal No Responses »

Nov 262017

OK, so today was a Sunday, I have recently finished some projects, so I had a bit of time to work on long overdue things around the house. Actually, it had to do with an attempt to repair an old TV, which needed to be vacuumed first, as it contained more than two decades’ worth of accumulated dust. But quickly, my attention turned to our vacuum cleaner instead.

It is a Kenmore vacuum cleaner, one of the house brands of soon-to-be-defunct Sears Canada. It is reasonably decent. But…

Well, it has a HEPA filter. It is supposed to filter the exhaust of the vacuum, to ensure that it contains no microscopic particles. The HEPA filter is a small rectangular piece made of cardboard and other materials that fits behind a cover on the back of the vacuum. The vacuum was barely a few weeks old when this cover first fell off. Putting it back on didn’t help; it fell off increasingly often. Taping it on didn’t do the trick either. Eventually, I affixed it with two screws, and it seemed to hold afterwards. Even then though, I had a nagging suspicion that there is something odd about this vacuum cleaner…

But first, let me digress. Let me mention a building, a six-story apartment building in the Hungarian city of Pécs, which is the building where my wife grew up. This building is odd, as its stairwell and elevator shaft are housed in an entirely separate building, connected to the main building on each level by a hanging corridor. Rumor has it that the original architect simply forgot to include a stairwell and elevator shaft in the design. Kind of hard to believe but…

Anyhow, back to my vacuum cleaner. My nagging suspicion was this: after the air goes through the HEPA filter, where does it go? It is surely not going to exhaust through the solid plastic filter cover (the one that kept falling off.)

Lately, our vacuum cleaner was making weird noises. When I looked at it more closely today, I noticed that one of the screws that I used to affix the HEPA filter cover was gone, and that the filter cover was slightly off. The weird noise was the air whistling through the resulting gap. Well… this did it. Hard as it is to believe, I was forced to conclude that whoever designed this vacuum cleaner forgot to include an exhaust in the design.

Out came my trusty drill (bought at a Sears store eons ago when Sears was still the best source for quality tools) and a few minutes later, the filter cover had a bunch of holes in it:

I put the cover back on, affixed it with screws again, and tested the vacuum cleaner. It was working just fine, running more smoothly than ever, and significantly cooler to the touch than ever before. And when you put your hands over the holes that I made, you could feel the tremendous outrush of air… air that previously had no place to go other than exhausting through cracks between plastic bits. No wonder the pressure was high enough to push off the HEPA filter cover even when screws were holding it in place.

Before writing this blog entry, just to be sure, I double checked. I don’t want to make a fool of myself after all. But no… there truly is no exhaust, none whatsoever, on this vacuum cleaner.

What engineer in his right mind designs a vacuum cleaner with no exhaust?

Hmmm. Maybe an engineer from the same school that trained the architect who designs buildings without stairwells.

TV repair

Canada, Electronics, Handyman, Personal No Responses »

Nov 262017

Yesterday, I went grocery shopping.

I came home with groceries and a TV.

You see, Loblaws was selling cheap 32″ smart TVs at the checkout counter. Only 150 dollars (Canadian), and they even paid the sales tax.

We were in need of a TV. The TV that we have in the bedroom (rarely used, but good to have; it’d have been nice earlier this month, when I spent a few extra hours in bed on account of feeling miserably sick) is old, useless and broken. Useless because it’s an analog TV, and there is no analog service anymore, nor do we have an extra settop box for upstairs. And broken because… well, even when it was still actively in use, we needed to whack it every so often, as after it warmed up a little, its picture became elongated and discolored… but a good, well-aimed whack fixed it. Lately though, the picture was permanently distorted and in addition, the TV made a horrible, rattling, buzzing sound (and no, it didn’t come from its speakers.)

Anyhow, we now have a new TV in the bedroom. It picks up OTA digital channels just fine using a small antenna, and it works well with Netflix and YouTube. Perfect. And I managed to haul the old TV downstairs this morning. (It’s incredible just how heavy these larger old CRT televisions are.)

Before throwing it out, I decided to open it up. Who knows, maybe I can fix it and in that case, it can still have a second life at the Salvation Army or whatever. The later it becomes landfill, the better for all of us. So I decided to check this old beast’s innards. Which, in case anyone is wondering, looks like this (yes, I took several pictures just in case I disconnect something that needs to be reconnected the right way):

After removing the back cover and then vacuuming out a few pounds of accumulated dust, I powered it on, listening for the buzz. I also looked at the circuit board using my IR camera. My attention was quickly drawn to the left side, where there are some rather hot parts, but that turned out to be a bit of a red herring: the hottest part is a high-wattage resistor that is meant to shed a lot of heat. Next to it though… what I thought was an inductor turned out to be a relay. And that’s what appears to be rattling!

I checked online. Surprisingly, this is a standard part, not model-specific, still being sold. But the first price I saw was something like $12.50 US plus shipping. Way too much to invest into a 23 year old CRT television set. But then… I found an offer from China for the princely sum of 75 US cents, plus 35 cents shipping. $1.10 in total. Of course I ordered it.

So now I wait. When the part arrives, I’ll attempt surgery. If it fixes the TV, we’ll find a good home for it. If not… landfill, landfill, here we come.

Incidentally, this television set was assembled in Canada. How about that. I don’t think there are many television sets assembled in Canada these days.

Trump and the Great Firewall

Computer Security, Internet, Politics No Responses »

Nov 102017

I’ve seen several news reports commenting on the fact that Donald Trump was using Twitter while visiting China. That despite the fact that Twitter is one of those Western services that are blocked by China’s “Great Firewall”. Some even speculated that Trump was using a military communications network or some other exotic technology to circumvent Chinese restrictions. (As if the US military was foolish enough to let this idiot of a president’s unsecure smartphone access their network.)

But reality is much more mundane, as I know quite well from personal experience in China.

When you are traveling with a phone registered to a foreign service provider, your Internet connection initiates from that provider’s network. So insofar as the Internet is concerned, you are not even in China. Your connection initiates from your home country. In my case, whenever I used my phone in China for Internet access, I accessed the Internet from an IP address registered with my Canadian cellular service provider, Rogers. I had unrestricted access to Google, Facebook, CNN and other news sites, with no Chinese restrictions.

Trump probably did exactly what I did, except that he probably worried about international data roaming charges and data caps a little less than I. He grabbed his phone, turned it on, and used it without a second thought. (OK, that’s not exactly like me. Trump was probably not surprised to see Twitter work on his phone in China, because he probably knows very little about the Great Firewall. I was mildly surprised myself, especially as I went there prepared for the worst, with multiple overt and covert VPN options prepared just in case I needed them. Which I did… but only when I was using the hotel Wi-Fi instead of the cellular network.)

Sci-Hub in US court

Intellectual Property, Internet, Science No Responses »

Nov 092017

Sci-Hub is a Russian Web site that contains pirated copies of millions of research papers.

Given that many of these papers are hidden behind hefty paywalls, it is no surprise that Sci-Hub has proven popular among researchers, especially independent researchers or researchers in third world countries, whose institutions cannot afford huge journal subscription fees.

Journal publishers do provide a service (at least those few journals that still take these tasks seriously) as they go through a reasonably well-managed peer review process and also perform quality copy editing. But… the bulk of the value comes not from these services, but from the research paper authors and the unpaid peer reviewers. In short, these publishers take our services for free (worse yet, often there are publication charges!) and then charge us again for the privilege to read what we wrote. No wonder that even in the generally law-abiding scientific community there is very little sympathy for journal publishers.

Nonetheless, publishers are fighting back, and the American Chemical Society just won a case that might make it a lot harder to access Sci-Hub from the US in the future. For what it’s worth, it hasn’t happened yet, or maybe we are immune in Canada:

$ dig +short sci-hub.io
104.31.86.37
104.31.87.37
$ traceroute sci-hub.io
[...]
 9 206.223.119.180 (206.223.119.180) 46.916 ms 44.267 ms 66.828 ms
10 104.31.87.37 (104.31.87.37) 31.017 ms 29.719 ms 29.301 ms

I don’t know, but to me it looks as just another case of using the legal system to defend a badly broken, outdated, untenable business model.

100 years

History, Politics No Responses »

Nov 072017

In between being sick with a cold and being hopelessly behind with my TODO list, I almost forgot. Today was an remarkable anniversary.

It was 100 years ago today that the Great October Socialist Revolution (which happened on October 25 according to the Julian calendar, which was still in use in Russia in 1917) achieved victory in St. Petersburg and the Utopian communist Soviet state was born.

Sadly, the Utopian dreams did not last very long. In between its inability to govern without violence and the threats, both internal and external, that the fledgling communist state faced, it quickly turned to a less Utopian interpretation of Marx’s dream: The “dictatorship of the proletariat”, one-party rule in a totalitarian police state.

Nonetheless… when I was little, growing up in then-communist Hungary behind the Iron Curtain, the Soviet Union seemed eternal. Its successes were spectacular, including how it prevailed against the Nazi war machine in the Great Patriotic War and also how it rushed to the forefront of many areas in engineering and the sciences, including the first orbital spacecraft and the first manned spaceflight.

Alas, the Soviet Union proved less eternal than anyone thought. It was done in by an incompetent, ultraconservative octogenarian leadership and the inherent failures and weaknesses of its command economy. Less than 75 years after it was created, the Soviet Union ceased to exist. The red flag over the Kremlin was taken down, and the Soviet federation itself broke up into its constituent states.

And now here we are, on the 100th anniversary of the Great October Socialist Revolution, and barely anyone remembers. There are no broadcasts of military parades from Moscow’s Red Square. Not even a brief commemoration in the evening local news on the CBC, or on CNN in between their analysis of Trump’s Asia trip and the results of tonight’s interim elections. If Russia is mentioned at all, it’s only in the context of the Mueller investigation. The revolution that shook the world in 1917 and shaped the world for three quarters of a century afterwards seems mostly forgotten.

Heck, I almost forgot to blog about it.

Cold

Health, Personal No Responses »

Nov 072017

In case anyone is wondering why my blog has been sitting idle for the past two weeks…

It’s a damn cold.

I haven’t had a cold or a flu in years. In fact, I was beginning to think that I might have become immune.

Er… nope.

Nearly two weeks ago, my wife began to feel sick. The usual: a bit of a cough, a bit of a runny nose, and a fairly high temperature, actually. The next morning when I woke up, I felt perfectly fine. Until I coughed a little, that is. And it felt like a sharp knife stabbing me in the middle of my chest. “Damn,” I said to myself, “I caught it.”

And caught it I did. I was sick for many days. Something that has not happened to me in decades: I even stayed in bed for half a day a couple of times.

OK, now I am on the mend. I still don’t have much of a speaking voice, I still get coughing fits, and my stomach is still a bit queasy, but I feel generally okay.

My wife recovered a little more quickly than I, but even she is still coughing occasionally.

I hope that we both paid our dues to the demons of the common cold or the evil spirits of the flu for several years to come.

Meanwhile, I already had a lot of catching up to do before I fell ill… now, my TODO list looks bad enough to make me feel desperately, depressingly sick again. Will I ever catch up?