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Die Geschichte des Strahlenschutzes beginnt an der Wende vom 19. zum 20. Jahrhundert mit der Erkenntnis, dass ionisierende und nichtionisierende Strahlung aus natürlichen und künstlichen Strahlenquellen eine schädigende Wirkung auf lebende Organismen haben kann.

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Geschichte des Strahlenschutzes – Wikipedia
Wechseln zu: Navigation, Suche [imagelink] [emptylink] Ungeschützte Experimente in den USA 1896 mit einer frühen Röntgenröhre (Crookes-Röhre), als die Gefahren der Strahlung noch weitgehend unbekannt waren [1] Die Geschichte des Strahlenschutzes beginnt an der Wende vom 19. zum 20. Jahrhundert mit der Erkenntnis, dass ionisierende und nichtionisierende Strahlung aus natürlichen und künstlichen Strahlenquellen eine schädigende Wirkung auf lebende Organismen haben kann. Sie ist damit auch die Geschichte der Strahlenschädigungen. Nachdem in der Anfangszeit der Umgang mit radioaktiven Substanzen beziehungsweise Röntgenstrahlung leichtfertig erfolgte, mü

Flashcard 3420090141964

Question

In linux, in bash scripting, functions arguments are handled via command line argument (just like the shell script itself) and the arguments can be accessed via the [...] syntax

Answer

$
^^

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Pass arguments into a function - Linux Shell Scripting Tutorial - A Beginner's handbook
al - A Beginner's handbook Pass arguments into a function From Linux Shell Scripting Tutorial - A Beginner's handbook Jump to: navigation, search ← Calling functions Home local variable → Shell functions have their own command line argument. Use variable $1, $2..$n to access argument passed to the function. The syntax is as follows: name(){ arg1=$1 arg2=$2 command on $arg1 } To invoke the the function use the following synt

Flashcard 3420094336268

Question

In linux, write bash script function called greeting, that takes a single argument, some name, and print "hello <name>", e.g. "hello Kevin". Also call the function to test it.

Answer

function greeting()
{
    echo "hello $1"
}

greeting Kevin

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Pass arguments into a function - Linux Shell Scripting Tutorial - A Beginner's handbook
de] 1 Example 1.1 Function shell variables 1.1.1 How Do I Display Function Name? 1.1.1.1 FUNCNAME in action 1.2 Example Example Create a function called fresh.sh: #!/bin/bash # write a function fresh(){ # t stores $1 argument passed to fresh() t=$1 echo "fresh(): \$0 is $0" echo "fresh(): \$1 is $1" echo "fresh(): \$t is $t" echo "fresh(): total args passed to me $#" echo "fresh():

Flashcard 3420097481996

Question

In linux, in bash scripting, the [...] keyword is used to iterate over the command line arguments, so that $1 gets the value of $2 , $2 gets the value of $3 , on each call.

Answer

shift

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7. Shell Scripting
gh each argument and decide what to do with it. A script like for i in $1 $2 $3 $4 ; do <statments> done doesn't give us much flexibilty. The shift keyword is meant to make things easier. It shifts up all the arguments by one place so that $1 gets the value of $2 , $2 gets the value of $3 , and so on. ( != tests that the "$1" is not equal to "" , that is, whether it is empty and is hence past the last argument.) Try while test "$1" != "" ; do echo $1 shift done and run the program w

Flashcard 3420100627724

Question

In linux, write simple bash script that prints out all the command line arguments of the script no matter how many or few (e.g. if you run script test.sh as "./tests.sh one two three", it will print out "one\n two\n three")

Answer

#!/bin/bash
while [ "$1" != "" ]; do
    echo $1
    shift
done

^^ note the use of shift
^^ also note the "$1" in the conditional clause of while loop (line 2) wrapped in "", as this is needed for string comparison!!!

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7. Shell Scripting
d argument is: birds Now we need to loop through each argument and decide what to do with it. A script like for i in $1 $2 $3 $4 ; do <statments> done doesn't give us much flexibilty. The shift keyword is meant to make things easier. It shifts up all the arguments by one place so that $1 gets the value of $2 , $2 gets the value of $3 , and so on. ( != tests that the "$1" is no

Annotation 3420113997068

we’ve built an extensive network of points of presence (PoPs) around the world

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Dropbox traffic infrastructure: Edge network | Dropbox Tech Blog
tered users who trust us with exabytes of data and petabytes of corresponding metadata. For the Traffic team this means millions of HTTP requests and terabits of traffic. To support all of that we’ve built an extensive network of points of presence (PoPs) around the world that we call Edge. Why do we need Edge? Many of the readers know the basic idea of CDNs: terminating TCP and TLS connections closer to the user leads to improved user experience because

Annotation 3420117142796

GSLB is responsible for loadbalancing users across PoPs. That usually means sending each user to the closest PoP, unless it is over capacity or under maintenance.

GSLB is called the “most important part” here because if it misroutes users to the suboptimal PoPs frequently, then it makes the Edge network useless, and potentially even harms performance.

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Dropbox traffic infrastructure: Edge network | Dropbox Tech Blog
e can just brute-force through it and get a definitively optimal result instead of the one that can get stuck on a local optimum. GSLB Let’s start with the most important part of the Edge—GSLB. GSLB is responsible for loadbalancing users across PoPs. That usually means sending each user to the closest PoP, unless it is over capacity or under maintenance. GSLB is called the “most important part” here because if it misroutes users to the suboptimal PoPs frequently, then it makes the Edge network useless, and potentially even harms performance. The following is a discussion of commonly used GSLB techniques, their pros and cons, and how we use them at Dropbox. BGP anycast Anycast is the easiest loadbalancing method that relies

Annotation 3420962032908

later

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French Revolution - Wikipedia
ysjɔ̃ fʁɑ̃sɛːz] ) was a period of far-reaching social and political upheaval in France and its colonies that lasted from 1789 until 1799. It was partially carried forward by Napoleon during the later expansion of the French Empire . The Revolution overthrew the monarchy, established a republic, catalyzed violent periods of political turmoil, and finally culminated in a dictatorship

Flashcard 3420980382988

Question

True, there are still notable failures; but when faced with such failures we no longer shrug our shoulders and say, ‘Well, that’s the way things work in our imperfect world’ or ‘[...] will be done’.

Answer

God’s

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True, there are still notable failures; but when faced with such failures we no longer shrug our shoulders and say, ‘Well, that’s the way things work in our imperfect world’ or ‘God’s will be done’.

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Annotation 3421257993484

Treating people with kindness

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Treating people with kindness | Seth's Blog
king (oh my!) Free content About Seth Godin Learn altMBA The Marketing Seminar Udemy Courses The Akimbo Podcast Welcome back. Have you thought about subscribing? It's free. seths.blog/subscribe Treating people with kindness One theory says that if you treat people well, you're more likely to encourage them to do what you want, making all the effort pay off. Do this, get that. Another one, which I prefer, i

Annotation 3421260090636

prokaryote Zellen: unter dem Mikro- skop ist kein Zellkern zu sehen un

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Annotation 3421261663500

eukaryote Zellen: unter dem Mikro - skop ist ein Zellkern zu sehen (▶ Abb. 1.1)

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Flashcard 3421263236364

Question

[default - edit me]

Answer

Die Zelle ist der Grundbaustein des menschlichen Körpers sowie aller Tiere und Pflanzen.

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Annotation 3421424454924

Die Zellmembran (Plasmalemm) begrenzt die Zelle. Sie bildet eine Barriere zwischen dem Zellinneren (Intrazel- lularraum) und dem Raum außerhalb der Zelle (Extrazel- lularraum) und schützt die Zelle vor mechanischer und chemischer Schädigung. Die Zellmembran besteht aus einer zweilagigen Schicht, der Lipiddoppelschicht.

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Annotation 3421426552076

Die Lipide (S. 29) der Lipiddoppelschicht setzen sich jeweils aus einem Schwanz und einem Kopfteil zusam- men, wobei der Schwanz fettliebend (lipophil) und der Kopf wasserliebend (hydrophil) ist. Die Schwänze und damit die lipo philen Anteile der Lipiddoppelschicht zeigen zu

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Annotation 3421429173516

1 Biologie der Zelle Der menschliche Körper setzt sich aus 75 Bil- lionen „Bausteinen“ zusammen, den Zellen. Die meisten davon sind rote Blutkörperchen (25 Billionen), gefolgt von Nervenzellen (100 Milliarden). Entsprechend dieser sehr großen Menge von Zellen ist die einzelne Zelle mikro- skopisch klein. Mit bloßem Auge erkennbar sind nur weibliche Eizellen, die mit einem Durchmesser von 150 μm die größten Zellen des Menschen darstellen. Einige Bindege- webszellen sind dagegen nur 5 μm „groß“. Jede Zellart hat bestimmte Aufgaben. Ery- throzyten z. B. transportieren Sauerstoﬀ, Ner- venzellen leiten Erregungen weiter, Keimzel- len dienen der Fortpflanzung usw. Welche Leistung die jeweilige Zelle für den Organis- mus erbringt, ist in bestimmten Abschnitten der sog. Desoxyribonukleinsäure (DNS bzw. DNA) in den Genen im Zellkern gespeichert

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Annotation 3421435202828

Der muskulöse Anteil des Zwerchfells wird nach dem Ursprung in drei Anteile untergliedert: Lenden-, Brustbein- und Rippenteil. Alle drei Anteile enden in einer gemeinsamen Sehnenplatte (Centrum tendineum), die aus den miteinander verflochtenen Sehnenfasern besteht. Das Verhältnis zwischen dem muskulösen und dem sehnigen Anteil ist innerhalb der Säugetiere variabel. Hunde und Katzen besitzen eine kleine, schmale und Y-förmige Sehnenplatte, bei den übrigen Haustieren und beim Menschen ist sie V- bis herzförmig und stellt die größte Zwerchfellportion dar.

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Zwerchfell – Wikipedia
asis und Hypophyse ) als auch außerhalb der Anatomie verwendet (→ Diaphragma ). Anatomischer Aufbau[Bearbeiten | Quelltext bearbeiten ] [imagelink] [emptylink] Zwerchfell des Menschen von unten Der muskulöse Anteil des Zwerchfells wird nach dem Ursprung in drei Anteile untergliedert: Lenden-, Brustbein- und Rippenteil. Alle drei Anteile enden in einer gemeinsamen Sehnenplatte (Centrum tendineum), die aus den miteinander verflochtenen Sehnenfasern besteht. Das Verhältnis zwischen dem muskulösen und dem sehnigen Anteil ist innerhalb der Säugetiere variabel. Hunde und Katzen besitzen eine kleine, schmale und Y-förmige Sehnenplatte, bei den übrigen Haustieren und beim Menschen ist sie V- bis herzförmig und stellt die größte Zwerchfellportion dar. Der Lendenteil (Pars lumbalis) entspringt an der Bauchseite (ventral) der Lendenwirbelsäule . Er besteht aus einem rechten (Crus dextrum) und einem linken Schenkel (Crus sinistrum). Die

Annotation 3421437299980

er muskulöse Anteil des Zwerchfells wird nach dem Ursprung in drei Anteile untergliedert: Lenden-, Brustbein- und Rippenteil. Alle drei Anteile enden in einer gemeinsamen Sehnenplatte (Centrum tendineum), die aus den miteinander verflochtenen Sehnenfasern besteht

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Der muskulöse Anteil des Zwerchfells wird nach dem Ursprung in drei Anteile untergliedert: Lenden-, Brustbein- und Rippenteil. Alle drei Anteile enden in einer gemeinsamen Sehnenplatte (Centrum tendineum), die aus den miteinander verflochtenen Sehnenfasern besteht. Das Verhältnis zwischen dem muskulösen und dem sehnigen Anteil ist innerhalb der Säugetiere variabel. Hunde und Katzen besitzen eine kleine, schmale und Y-förmige Sehnenplatte, bei den

Original toplevel document

Annotation 3421439659276

Der Lendenteil (Pars lumbalis) entspringt an der Bauchseite (ventral) der Lendenwirbelsäule. Er besteht aus einem rechten (Crus dextrum) und einem linken Schenkel (Crus sinistrum). Diese „Zwerchfellpfeiler“ stellen Muskelstränge dar, die beim Menschen nach oben, bei den Tieren infolge der horizontalen Körperorientierung nach vorn ziehen. Der rechte Schenkel ist kräftiger und kann in zwei (Mensch: Crus mediale und Crus laterale) oder drei Unterabschnitte unterteilt werden. Am Lendenteil gibt es drei sehnige Bögen. Die Quadratus- (Ligamentum arcuatum laterale) und die Psoasarkade (Ligamentum arcuatum mediale) umgreifen bauchseitig die beiden Anteile des Musculus iliopsoas, die Aortenarkade (Ligamentum arcuatum medianum) den Aortenschlitz (s. u.)

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Zwerchfell – Wikipedia
l. Hunde und Katzen besitzen eine kleine, schmale und Y-förmige Sehnenplatte, bei den übrigen Haustieren und beim Menschen ist sie V- bis herzförmig und stellt die größte Zwerchfellportion dar. Der Lendenteil (Pars lumbalis) entspringt an der Bauchseite (ventral) der Lendenwirbelsäule . Er besteht aus einem rechten (Crus dextrum) und einem linken Schenkel (Crus sinistrum). Diese „Zwerchfellpfeiler“ stellen Muskelstränge dar, die beim Menschen nach oben, bei den Tieren infolge der horizontalen Körperorientierung nach vorn ziehen. Der rechte Schenkel ist kräftiger und kann in zwei (Mensch: Crus mediale und Crus laterale) oder drei Unterabschnitte unterteilt werden. Am Lendenteil gibt es drei sehnige Bögen. Die Quadratus- (Ligamentum arcuatum laterale) und die Psoasarkade (Ligamentum arcuatum mediale) umgreifen bauchseitig die beiden Anteile des Musculus iliopsoas , die Aortenarkade (Ligamentum arcuatum medianum) den Aortenschlitz (s. u.). [imagelink] [emptylink] Seitliche Zwerchfellprojektion und Zwerchfellansatzlinie, Hund. (römische Ziffern = Rippennummern) Der Lendenteil grenzt seitlich an den Rippenteil (Pars costal

Annotation 3421443067148

It can be of advantage to set up a local name resolution cache such as nscd .

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PostgreSQL: Documentation: 9.1: The pg_hba.conf File
al host name. So .example.com would match foo.example.com (but not just example.com). When host names are specified in pg_hba.conf, you should make sure that name resolution is reasonably fast. It can be of advantage to set up a local name resolution cache such as nscd. Also, you may wish to enable the configuration parameter log_hostname to see the client's host name instead of the IP address in the log. Occasionally, users have wondered why host name

Annotation 3421505457420

Examines the debate in early modern philosophy over the composition and internal architecture of matter, focussing on problems concerning the structure of continua, the metaphysics of parts and wholes, and the individuation of material beings. Are the parts of material bodies actual or potential entities? Is matter divisible to infinity? Do material bodies resolve to atoms? All the leading figures of the period address this cluster of issues, including Galileo, Descartes, Hobbes, Leibniz, Newton, Hume, Boscovich, Reid, and Kant. Presents a historical and critical study of these discussions, and offers an overarching interpretation of the controversy. Locates the central problem in the tension between the early moderns’ actual parts ontology on the one hand, and the programme of the geometrization of nature on the other.

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Annotation 3427165146380

odbyliśmy miłą i kulturalną rozmowę na temat tego, dlaczego film o Carmen Sandiego jest superfilmem.

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Annotation 3428643114252

Większość z nas nie ma kłopotu z zaakceptowaniem pozytywnych uczuć dzieci.

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Annotation 3428644687116

Problem zaczyna się dopiero wtedy, kiedy dzieci wyrażają negatywne emocje.

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Annotation 3428646259980

odczuwamy silną wrogość wobec osoby, która zaprzecza naszym negatywnym uczuciom

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Annotation 3428647832844

Zaprzeczanie uczuciom

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Annotation 3428649405708

Narzędzie nr 1. Zaakceptuj uczucia słowami.

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Annotation 3428650978572

1. Zaciśnij zęby i powstrzymaj chęć natychmiastowego sprzeciwu!

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Annotation 3428652551436

2. Pomyśl o emocjach, jakie odczuwa dziecko. 3. Nazwij te emocje i wypowiedz zdanie, którym je określisz.

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Annotation 3428676930828

So. Postgres user handling is Bloody Fucking Weird, and very VERY archaic in some places.

To begin with, Postgres users are not the same users as your computer. Except when you use peer authentication, which is default for "local" connections (in-machine).

With peer authentication, you need to have the same username inside the database as outside. So root cannot connect as postgres into the database.

Postgres also supports other kinds of authentication, for example trust, which basically says yessir, you're ok no matter who you say you are (not very good).

It also supports the ancient and untrustworthy ident protocol, that noone in their sane mind would ever use, and which was designed in the 80s/90s.

Then comes the slightly more modern authentications, md5.

md5 is basically a username & password combination for your database, where both the username and password are stored in the database system. Then it no longer matters who you are connecting as on the computer ( be it root, postgres, joedope).

This is the sane method, and you should use it.

By default, postgres might use it if you give it a hostname of localhost. ( -h localhost).

Then comes the pg_hba.conf file, which is an amazing hairy construct. It's basically a firewall file for your database system. It tells you which users & databases are allowed to connect from which systems, including your local machine.

Then, because ident wasn't stupid enough, they re-envisoned ident as a config file, allowing you to override the username and other combinations in a file on your machine. Don't use it. Really don't.

What you want to do is this:
- Ignore peer authentication for anything but the postgres user.
- Create a new admin user (createuser) with password.
- Add your new admin user to pg_hba.conf like this:

local all mysuperuser md5

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Cannot get into shell using psql command. : PostgreSQL
Your? Do you enter your shell account password? Do you even have "user" account *in database *? permalink embed save parent give gold [–]Darkmere 1 point2 points3 points 1 year ago (0 children) So. Postgres user handling is Bloody Fucking Weird, and very VERY archaic in some places. To begin with, Postgres users are not the same users as your computer. Except when you use peer authentication, which is default for "local" connections (in-machine). With peer authentication, you need to have the same username inside the database as outside. So root cannot connect as postgres into the database. Postgres also supports other kinds of authentication, for example trust, which basically says yessir, you're ok no matter who you say you are (not very good). It also supports the ancient and untrustworthy ident protocol, that noone in their sane mind would ever use, and which was designed in the 80s/90s. Then comes the slightly more modern authentications, md5. md5 is basically a username & password combination for your database, where both the username and password are stored in the database system. Then it no longer matters who you are connecting as on the computer ( be it root, postgres, joedope). This is the sane method, and you should use it. By default, postgres might use it if you give it a hostname of localhost. ( -h localhost). Then comes the pg_hba.conf file, which is an amazing hairy construct. It's basically a firewall file for your database system. It tells you which users & databases are allowed to connect from which systems, including your local machine. Then, because ident wasn't stupid enough, they re-envisoned ident as a config file, allowing you to override the username and other combinations in a file on your machine. Don't use it. Really don't. What you want to do is this: - Ignore peer authentication for anything but the postgres user. - Create a new admin user (createuser) with password. - Add your new admin user to pg_hba.conf like this: local all mysuperuser md5 permalink embed save give gold about blog about advertising careers help site rules Reddit help center wiki reddiquette mod guidelines contact us apps & tools Reddit for iPhone Redd

Edited, memorised or added to reading queue

on 16-Oct-2018 (Tue)

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