Программирование на Java для начинающих. Обзорный урок по основным типам коллекций языка Java, примеры использования для анализа данных.

Источник данных для анализа: hubofdata.ru/group/c282e23b-7bb3-41a4-b7b9-57fc0b8425d2?res_format=CSV

0:40 Коллекции
1:57 Списки
3:41 Множества или наборы
5:39 Карты или ассоциативные массивы
9:08 Практическая часть
36:16 Демонстрация результатов анализа

4차 산업혁명과 블록체인 컨퍼런스 (2018.2.28)

— 주최: KISDI(정보통신정책연구원)
— 후원: 과학기술정보통신부

В лекции №33 рассматривается концепция Merkle Tree, в частности:
1) Структура и принципы построения Merkle Trees.
2) Построение Merkle Branch и свойства деревьев Меркла.
3) Преимущества структуры Merkle Tree и области применения.

Telegram-чат, где можно задать вопросы: t.me/joinchat/IDXetUi27Vu8wtvAbNEzXw
Telegram-канал, чтобы узнавать новости первыми: t.me/blockchaincourse

This online training workshop enables developers (including non-C developers) to quickly learn the basics of EOSIO distributed application (DApp) development, with a focus on back-end smart contract creation.

1. Understand the high-level fundamental pieces of an EOSIO DApp

2. Learn the flow of transactions and actions (messages and events) in EOSIO

3. Observe the development and deployment of a DApp on EOSIO

4. Discover the various libraries available to a DApp developer

Learn more about blockchain technology and enterprise blockchain solutions: objectcomputing.com/expertise/blockchain-solutions

Second lecture of the Bitcoin and cryptocurrency technologies online course.

For the accompanying textbook, including the free draft version, see: bitcoinbook.cs.princeton.edu/

In this lecture (click the time to jump to the section):
* Centralization vs. decentralization 1:12
* Distributed consensus 4:45
* Consensus without identity: the block chain 17:46
* Incentives and proof of work 35:43
* Putting it all together 55:39

Fourth lecture of the Bitcoin and cryptocurrency technologies online course.

For the accompanying textbook, including the free draft version, see: bitcoinbook.cs.princeton.edu/

In this lecture (click the time to jump to the section):
* Simple Local Storage 0:27
* Hot and Cold Storage 6:28
* Splitting and Sharing Keys 19:52
* Online Wallets and Exchanges 30:54
* Payment Services 50:17
* Transaction Fees 58:30
* Currency Exchange Markets 1:04:09

Third lecture of the Bitcoin and cryptocurrency technologies online course.

For the accompanying textbook, including the free draft version, see: bitcoinbook.cs.princeton.edu/

In this lecture (click the time to jump to the section):
* Bitcoin transactions 1:44
* Bitcoin scripts 11:42
* Application of Bitcoin scripts 27:20
* Bitcoin blocks 42:09
* The Bitcoin network 47:58
* Limitations

MIT 15.S12 Blockchain and Money, Fall 2018
Instructor: Prof. Gary Gensler
View the complete course: ocw.mit.edu/15-S12F18
YouTube Playlist: www.youtube.com/playlist?list=PLUl4u3cNGP63UUkfL0onkxF6MYgVa04Fn

This lecture provides an introduction to the course and to blockchain technology.

License: Creative Commons BY-NC-SA
More information at ocw.mit.edu/terms
More courses at ocw.mit.edu

Sixth lecture of the Bitcoin and cryptocurrency technologies online course.

For the accompanying textbook, including the free draft version, see: bitcoinbook.cs.princeton.edu/

In this lecture:
* Anonymity basics
* Overview of Bitcoin deanonymization
* Mixing
* Decentralized mixing
* Zerocoin and Zerocash
* Tor and the Silk Road

For slides, a problem set and more on learning cryptography, visit www.crypto-textbook.com.
The book chapter «Introduction» for this video is also available for free at the website (click «Sample Chapter»).