Monthly Shaarli

All links of one month in a single page.

May, 2020

The Julia Language - my notes
Using RSS feeds

blog posts

feed readers

Note: this list is not exhaustive. If you know of a feed reader I've missed, let me know and I'll add it.

Tools that make it easier to add sources to your feed reader

Code Is Science
Interactive Coronavirus (Covid-19) Travel Regulations Map - IATA

International travel document news from IATA

China Mobile and Facebook in joint project to build 2Africa submarine cable
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The 2Africa project is part of a joint enterprise by China Mobile International, Facebook, MTN GlobalConnect, Orange, stc, Telecom Egypt, Vodafone, and the West Indian Ocean Cable Company (WIOCC).

The 37,000km-long 2Africa cable will feature around 21 landing points in 16 African countries and will carry three times the total network capacity of all the submarine cables currently serving the continent.

Egypt Telecom appears to also be involved in another subsea cable encircling Africa. I don't know if/how it relates or interconnects to the 2Africa cable.

Atlas of 100% Renewable Energy Vision
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Wärtsilä has modelled 145 countries and regions to find the optimal way to produce electricity from 100% renewable energy sources. The map illustrates how the power system of each of these regions would look like if they were to be optimally built from scratch, not considering the burden of existing power plants.

Nicely done interactive map, and quite fun to explore.

The optimisations presented in this map were calculated using a proprietary tool, but carried out in collaboration between Wärtsilä and LUT University's solar research group under the direction of professor of solar economy Christian Breyer.

Not sure if the data itself is published anywhere. Don't know why several outlets label this map "open access". Interactive, yes, openly accessible on the web, yes, but by that measure most any website would count as "open access".

The optimal capacity and energy mix are defined using a power system optimisation tool Plexos, which is a commercially used software developed by Energy Exemplar. Technologies and their parameters (costs, efficiencies, technical lifetime etc.) and conditions of each region (renewable profiles, load profiles etc.) are given to the software, after which the optimisation algorithm calculates the mix of technologies which provide the lowest cost for each region, but can still manage to serve energy demand reliably every hour of the year. We have used representative region-specific renewable profiles. For reliability purposes the system in both scenarios has been designed to sustain up to three consecutive days of low renewable production.

It's interesting to see how the Wärtsilä PR department has clearly been spreading the word around. News of this Atlas via

News of the research agreement via

European Open Science Cloud (EOSC)

A cloud for research data in Europe.

EOSC ska göra öppen vetenskap till det nya normala.
EOSC Association

  • **EOSC Portal is your unified access to the European hub of research data, tools and services.***
earth :: a global map of wind, weather, and ocean conditions
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Återvinningsbar?
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I princip en sökmotor som svarar på bara en fråga: är materialet återvinningsbart, och i så fall hur? Återvinningsbar är en tjänst av Stena Recycling.

Andra liknande tjänster:

Så kan surfplattor användas i förskolan

Innehållet i de digitala resurserna, hur de används och till vad, är viktigare än att diskutera skärmtid. Det menar forskaren Petra Petersen som i en avhandling undersökt de möjligheter surfplattan ger för att få barn delaktiga i förskolans aktiviteter.

Länk till avhandlingen "Delaktighet och digitala resurser: Barns multimodala uttryck för delaktighet i förskolan i flerspråkiga områden" (DiVA) (PDF)

Solving the “The Miracle Sudoku”
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The Miracle Sudoku

In a word, thrilling. When is the last time you heard someone describe Sudoku in that way?

Steps to take to avoid leaking browsing history to third parties
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  • Telecommunications metadata
    Your ISP learns every website you visit via a few different channels: DNS lookups, the IP address of sites, and TLS Server Name Indication (SNI). Most ISPs log and store this metadata for some time. Mitigation There's no need to use your ISP's DNS server. Run your own. You can't really getting around your ISP learning the IP addresses you visit. But with TLS encryption and the pervasive use of content distribution networks (CDN) by many website providers, the IP address itself does not really say much. The "leaking" of domain names via SNI is harder to get around, but newer versions of TLS improve on the situation.

  • Web Site Data
    Any Web site that you go to is very likely to keep extensive logs of everything you do on the site, including what pages you visit and what links you click. They may also record what outgoing links you click. For example, Google Search does this. Mitigation Try to use alternative services, that don't track you. Such as Nitter instead of Twitter, Invidious instead of Youtube, DuckDuckGo instead of Google Search, Bibliogram or PixelFed instead of Instagram, Jitsi instead of Zoom, Signal instead of WhatsApp, and so on.

  • Browser Sync Data
    Although the browsing history stored on your computer may not be directly accessible, many browsers offer a “sync” feature which lets you share history, bookmarks, passwords, etc. between browser instances (such as between your phone and your laptop). This information has to be stored on a server somewhere and so is potentially accessible. Mitigation Make sure that whoever hosts this server allows you to properly encrypt your data (in such a way that the server owner can never decrypt). Or even better, self-host the sync server yourself (Firefox sync can be self-hosted in this manner).

برنامج في القرآن حياة

Published during Ramadan 1441
إنتاج المركز الإعلامي لمشيخة الأزهر الشريف

# Title Link Length
1 رحلة مع القرآن Youtube 23:36
2 هو الله Youtube 22:38
3 رحمة الله Youtube 22:27
4 من يرزقكم Youtube 22:12
5 الهداية Youtube 22:54
6 الحب بين الله و عباده Youtube 22:36
7 لا تحزنوا Youtube 21:17
8 التوبة Youtube 22:29
9 التوكل Youtube 22:27
10 ذكر الله Youtube 21:05
11 الزهد Youtube 21:07
12 حتى يرحمنا الله Youtube 20:59
13 المعرفة بالله Youtube 22:07
14 الدعاء Youtube 21:01
15 شكر الله Youtube 21:24
16 التعلق بغير الله Youtube 21:59
17 عدم قبول الابتلاءات Youtube 22:16
18 الرياء Youtube 22:54
19 الكسل في الطاعات Youtube 20:57
20 النبي مع الله Youtube 20:38
21 الدين المعاملة Youtube 20:53
22 العائلة Youtube 20:40
23 التّعاون Youtube 22:02
24 كُنْ حليْمًا Youtube 21:36
25 العمل Youtube 21:12
26 النّميمةُ Youtube 20:49
27 الْكِبْرُ Youtube 20:26
28 الْحَسَدُ Youtube 21:16
29 المجاهرة Youtube 21:16

I suggest you try to avoid using the Youtube website or Youtube's mobile apps. Instead, if you use the Youtube URL, watch their videos using a client outside of Google's control, such as Invidious or a desktop client like mpv or VLC, or a mobile app like NewPipe.

For safe-keeping, I have also downloaded copies of these videos onto my Nextcloud instance. You can play the videos from there in your browser, or download them locally to your own computer.

Note that the playlist on Youtube is missing two episodes.