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Quorten Blog 1

First blog for all Quorten's blog-like writings

Generate UUID using Linux procfs

2019-03-13

Categories: misc  
Tags: misc  

Interesting! How do you generate a UUID on the Linux command line without the use of the uuidgen program? Do this:

cat /proc/sys/kernel/random/uuid

20190313/DuckDuckGo debian generate uuid command
20190313/https://serverfault.com/questions/103359/how-to-create-a-uuid-in-bash

Interesting! How do you generate a UUID on the Linux command line without the use of the uuidgen program? Do this:

cat /proc/sys/kernel/random/uuid

20190313/DuckDuckGo debian generate uuid command
20190313/https://serverfault.com/questions/103359/how-to-create-a-uuid-in-bash

Lynn Parramore appears to be a great writer of economic articles, let’s look at some of her other articles.

This one is interesting. Wow, I’m surprised at the discrimination that Lynn Parramore had to face in her career. Even more surprising, what she said about how age relates to the discrimination she faces: she thought the discrimination would only be bad when she was a young woman, and it would go away as she got older. Nope, that’s not how it works. Instead, the discrimination she faced got steeper. Why? As she increased in position of power, the “reward” as thought by the harassers was larger. So, older women up in higher positions of power face even more discrimination incidents.

Also, this one is really interesting. Parramore put together a presentation about the economic effects of sexual harassment. Afterwards, she was quite surprised at the response from the economists in the audience. Thank you so much for mentioning this, I didn’t know that sexual harassment was an economic issue. But, what does Parramore think about this reaction? For one thing, she was surprised that there really weren’t any naysayers about the subject. On the other hand, she was also surprised that economists fail to connect the dots between women’s pay gaps, sexual harassment, and difficulty for women to advance to higher levels in business.

Wow, overall, very interesting, I recommend that you read the article yourself, my summary here is only for the sake of my own note-taking.

Read on →

This is an interesting coworking company. So, you’re wondering how 3D technology can be applied more intensively in the business world? Indeed, coworking spaces provides an avenue to apply this technology. 3D scanning and presenting 3D models of premises, using it as a means to maintain such environments, things like that.

20190312/https://www.jellyswitch.com/
20190312/https://blog.jellyswitch.com/
20190312/https://blog.jellyswitch.com/2019/03/12/the-incredible-growth-of-coworking/
20190312/https://blog.jellyswitch.com/2019/01/28/coworking-the-future-of-work/
20190312/https://blog.jellyswitch.com/2019/01/25/my-coworking-story/

UPDATE 2020-07-01: Alas, after revisiting this subject over a year later, it is clear that coworking spaces have their clear weakness in common with all on-premises job sites: sharing a space in common is not safe in cold and flu season, but especially not so in the midst of a pandemic. And this being a small company, rather than a larger one in the coworking space, has ought to been hit pretty hard. They hadn’t written a single new blog post since February 2020, and from the looks of it there have been layoffs of long-time employees there… relative to the fact that it is a young startup company.

Coworking? Basically, that is the creation of shared remote worker workspaces, where people employed by multiple different companies will be working in the same building, mainly for high speed Internet access and a little bit of social interaction for lunch, etc. I found out about this from an interesting company one of the acquaintances of my previous coworkers is working at. This is their website and a few notable blog articles that they’ve written.

The most notable thing that I am interested in is the bigger uptake of 3D scanning technology by coworking companies. Yes, this is good news when you are not sure of where the technology will find good applications.

20190312/https://www.jellyswitch.com/
20190312/https://blog.jellyswitch.com/
20190312/https://blog.jellyswitch.com/2019/03/12/the-incredible-growth-of-coworking/
20190312/https://blog.jellyswitch.com/2019/01/28/coworking-the-future-of-work/
20190312/https://blog.jellyswitch.com/2019/01/25/my-coworking-story/

Yeah, yeah, we talk about first world countries a lot. But you know what? The definition “first world” has been around for a long time, people nowadays are living better than ever, and global poverty has reached an all-time low. Surely, the term “first world” is an understatement of the living conditions some people experience every day now. What’s better than the first world? The “zeroth world,” of course. Now, let’s see. is there anything on the Internet about the zeroth world? There is nothing to be found from conventional sources, but lo and behold, I look to blogs not unlike my own to find the voices of people who know the zeroth world.

This is a tough search, and I have to turn to Google to get any useful results.

So, what are some characteristics that people claim about the zeroth world? First of all, the social considerations of the zeroth world. The zeroth world is a heavily middle class world. There are no household servants, people happily either do things on their own around their home, or they employ robots to do those things. Having servants is considered “morally dubious and conceited.” In the zeroth world, you do not refer to people of high education as “doctor” in conversation. Rather, you refer to them just like you would refer to everyone else. Dressing in luxury brands and jewelry is rare.

Read on →

One of the interesting subjects that comes up in science fiction is that of silicon-based lifeforms. On Earth, carbon is the backbone of most lifeforms as we know it. Silicon is also in the same column of the periodic table, so it shares some similar properties with carbon. Conceivably, it should then be possible that silicon-based lifeforms to exist in other places in our Universe, right?

Well, maybe, but a closer study of our Earthen materials science knowledge seems to state otherwise. Think about a lot of materials that are made out of carbon, and think about a lot of materials that are made out of silicon. One thing that is definitely agreeable about carbon is that it is a very chemically reactive element: many carbon-based materials can readily burn and combust. Wood, paper, cotton, plastic, wheatpaste, milk glue, charcoal, petroleum, they all burn quite readily and can contribute to the fuel of a wild fire. But, think of silicon-based materials by contrast: glass, ceramic, concrete, sand, water glass. All of these materials evoke the sense of inherently nonflammable construction. The fact is, silicon simply isn’t as reactive of an element as carbon is.

Read on →

Software test, testing, unit tests, integration tests. Yes, these are things that we do all the time, but most of us don’t really understand what we are doing. What language should tests be written in? What if you want to implement the same software in a different programming language? How do you different implementations of the same software written in different programming languages in a language-agnostic way?

Here is where a little bit of formal theory on software test can come to the rescue.

Let’s start at the very foundation of software test, and work our way up from there: hardware test. The fundamental definition of a modern digital computer is that it is composed out of a discrete number of logic components and has a discrete, finite amount of digital memory.

Combinatorial Logic

Combinatorial logic is simply a composition of discrete logic components that calculates and output from an input by means of implementing a certain Boolean logic function. Other related names and concepts are first-order logic and propositional logic. To rigorously test combinatorial logic, one simply needs to iterate all possible inputs and record all outputs. You will get a corresponding truth table. Now, the means of test is simply checking if the resulting truth table is the same as the expected truth table. If so, your test passes. Otherwise, it fails.

Read on →

Looking for information on flexible glass? Don’t be fooled, a first search on Wikipedia brings you to some interesting stories. Suffice it to say, the state-of-the-art of modern flexible glass technology is that of Gorilla Glass and Willow Glass, both manufactured by Corning Glass Company.

20190309/https://en.wikipedia.org/wiki/Gorilla_Glass

Beyond that, we have some pretty interesting information on Wikipedia about lost technologies and ancient technologies. A flexible glass-like material was purportedly invented in the ancient Roman times, but the inventor was beheaded out of fear, or so the legend goes. Other interesting lost inventions are Greek fire (some nitrocellulose-like substance that can burn even on water), corrosion-resistant iron, and precisely cut and drilled Mayan stones. One interesting ancient inventions that I was previously unaware of was Roman central heating systems. Indeed, the implementation was primitive, that of venting smokey furnace air underneath floors, through chimneys inside walls, and out through a roof, with some brass dampers in the system, but quite mighty in terms of the effectiveness and capabilities of the time.

Another interesting area are those of pseudoscience and pseudoarchaeology. One modern work of art, the “Babylonokia” represents a 1990s mobile phone handset carved out of a clay tablet with Cuneiform markings on it. This picture was copied and circulated with some false claims of archaeological discovery.

Read on →