Author Archives: dmitriano

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07
09
20
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My first experiment with a peak detection algorithm

Posted by | Cryptocurrencies |

Hi guys!

For those how are interested in what I am doing now I provided my app screenshots with ‘Find Peaks’ button that runs ZScore algorithm on a cryptocurrency market data (follow the this link for the algorithm source code in C++).

Honestly I am not quite enough understand yet how it works, because I run it first time today, but at least there is some correlation between input parameters and the results. The lesser the threshold and the longer the lag the lesser peaks are found. Increasing the influence also reduces the peak count.

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27
07
20
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Publishing QT application in Apple App Store

Posted by | iOS, Mac OS X, QT |

I succeeded with building my app for iOS and my first step in publishing the app in App Store was opening generated .xcodeproj file in XCode, but XCode froze displaying rotating progress indicator and wait cursor.

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22
07
20
 2 Comments

Mining Raven Coin (RVN) with KawPow on Windows 10

Posted by | RVN, Windows |

I run T-Rex miner as follows:

t-rex -a kawpow -o stratum+tcp://rvn.2miners.com:6060 -u <mywallet>.rigW -p x

and set the following parameters on my 1060 GTX 3GB card with MSI Afterburner:

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22
06
20
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GeForce GTX 1060 cooler replacement

Posted by | Video cards |

Gigabyte GTX 1060 cooler model is PLD09210S12HH DC 12V 0.40A and the size is 88mm:

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01
06
20
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Auditing of Autonomous Oracle Database

Posted by | Oracle |

Check if unified auditing is enabled:

SELECT VALUE FROM V$OPTION WHERE PARAMETER = 'Unified Auditing';

Check what options are enabled:

SELECT up.AUDIT_OPTION, uep.SUCCESS, uep.FAILURE from AUDIT_UNIFIED_ENABLED_POLICIES uep, AUDIT_UNIFIED_POLICIES up 
where uep.ENTITY_NAME = 'ALL USERS' and uep.ENABLED_OPTION='BY USER' and uep.POLICY_NAME = up.POLICY_NAME and up.AUDIT_OPTION_TYPE = 'STANDARD ACTION'
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30
05
20
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Binding NumPad arrows on MacOS with Karabiner

Posted by | Mac OS X |

I created the following key bindings in Karabiner:

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29
05
20
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How to publish a WordPress post

Posted by | WordPress |

Login to WordPress admin panel, select Posts on the left sidebar and create new post:

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27
05
20
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Building QT 5.15.0 (everywhere) for Android on Windows

Posted by | Android, QT |
  • Install Android Studio with SDK and NDK API Level 28.
  • Install strawberry-perl-5.26.2.1-64bit.msi first (before mingw-w64-install.exe) to E:\PFiles
  • Install MinGW with mingw-w64-install.exe online installer. Select POSIX threads in the installer UI combobox, otherwise you will get:
  • Extract the sources from QT archive qt-everywhere-src-5.15.0.zip to E:\Qt\Qt5.15.0 and run the following script in QT root directory containing configure.bat:
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21
05
20
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Creating Oracle Database in a Cloud

Posted by | Oracle |

Login to Oracle Cloud console, go to Autonomous Transaction Processing page:

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19
05
20
 2 Comments

Running a QT app on MacOS

Posted by | Mac OS X, QT |

I was able to compile and debug my app on MacOS with QT Creator:

All C++ code compiled successfully, but something went wrong with OpenGLES shaders. It is probably because I included OpenGLES headers from a wrong place.

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