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Control System: EPICS
Published in Volker Ziemann, A Hands-On Course in Sensors Using the Arduino and Raspberry Pi, 2018
where tar is an archiving program that unpacks (x option) compressed (z option) files (f option). Note the period ‘.’ at the end of the cp command, which is the shorthand notation for the current directory, /home/pi/epics in this case. The last command creates a subdirectory under /home/pi/epics with the name base-3.15.5. In order to avoid writing the version number over and over again, we create a soft link with the ln –s command, which essentially creates an alias in the same directory by executing ln –s base-3.15.5 base
MS-DOS for IBM PCs
Published in Paul W. Ross, The Handbook of Software for Engineers and Scientists, 2018
Conceptually similar in some ways to the now obsolete CP/M operating system, MS-DOS borrows concepts from the UNIX operating system. Although MS-DOS was originally designed to have the same general feel as CP/M, it was equipped with some important improvements. MS-DOS is a single-user, single-tasking operating system. Because MS-DOS runs on many different brands of computers, it is not classified as a proprietary operating system. It is, however, limited to the Intel 80x86 family of microprocessors. For this reason, MS-DOS is not a fully generic operating system either. Nevertheless, because of the continuing popularity and large installed base of IBM-compatible microcomputers, MS-DOS will remain a widely used operating system for some time.
Tools of the Host
Published in Gideon Samid, Computer-Organized Cost Engineering, 2020
As soon as MS-DOS beat CP/M and UNIX to become the primary personal computer operating system, the winner turned to the losers and borrowed from them their successful ideas. Advanced MS-DOS versions adopted tree structures for their file management. Accordingly, disk files don’t have to line up in one huge list of “files on the disk” but may be put in category packages (drawers of a sort) that will make it easier to find and to store. MS-DOS adhered to the UNIX user-knows-best philosophy and gave the user full control over the tree structure, starting with the “volume”. An MS-DOS disk can be divided into several volumes which can be addressed independently. The user controls the size and the number of the volumes.
Local Triangular Coded Pattern: A Texture Descriptor for Image Classification
Published in IETE Journal of Research, 2023
LTCP is composed of a 8-bit code. It is calculated by considering a set of three neighbourhood pixels with their centre pixel. A triangular pattern and a tri-code pattern are obtained in each direction. For computing each pixel, the triangular pattern is rotated by 900, and, thus, four coded patterns (CP0, CP1, CP2 and CP3) in the North (N), East (E), South (S) and West (W) directions are obtained. Then, these four triangular patterns are rotated by 180° and another four patterns (CP4, CP5, CP6 and CP7) are obtained. In each vector, the centre value is used as a threshold for three neighbours; 1 is generated if the threshold is greater than any of two neighbours, and a 0 is generated otherwise.
Joint CFO and channel estimation using pilot aided interpolation for high performance MIMO-OFDM
Published in International Journal of Electronics, 2023
S. Chitra, S. Ramesh, Ramya Vijay, G. Jegan, T. Samraj Lawrence
The CFO estimation algorithms such as blind estimation, CP-based estimation, and pilot-based estimation are discussed and analysed in this paper. For CFO estimation, the blind estimation technique uses statistical properties of the received signal (Weile Zhang et al., 2016). Since the receiver has no prior information of the transmitted signal, the design approach of blind CFO estimation is complex, and offers lower estimation accuracy (Liu Yang et al., 2018). In CP based estimation, the CP part of each MIMO-OFDM symbol is used to estimate the CFO by computing the phase difference between CP and the corresponding component at the symbol. For higher estimation accuracy, the CFO estimation is performed over all MIMO-OFDM symbols and the average is computed (Liu, Zhu, et al., 2018). For pilot based estimation, pilot sequences (Pk) are introduced to every MIMO-OFDM symbols at predefined locations as shown in Figure 1, in order to improve CFO estimation accuracy (Chen & Lam, 2018) and CIR with reduced computational complexity.
Modelling the behavioural component of the emergent parallel processes of working with graph databases using Petri net-tools
Published in International Journal of Parallel, Emergent and Distributed Systems, 2021
Stanislav Velykodniy, Zhanna Burlachenko, Svitlana Zaitseva-Velykodna
‘BC’ position is the initial condition for CAD operation. It contains 6 tokens and activates through the ‘AV’ transition the operation of input/output devices (positions: ‘CL,’ ‘ML,’ ‘GUI’). With the launch of ‘BC,’ the first 3 tokens move to the specified positions. Further, the condition for the command processing (‘CP’ transition as an event) is the transfer of information from the ‘ML’ and ‘CL’ positions in the form of entered commands. Generally, as seen from Figure 2 illustrating Petri net, OEDM describes the standard steps a user takes when working with CAD: opening the ‘BC’ programme, which leads to the activation of ‘AV’;creating a primitive using the ‘CL’ and ‘ML’ console commands;processing of ‘CP’ commands and processing of graphic information ‘CC’;the output of the ‘OR’ command results to the ‘GUI’ screen;creating and maintaining the hierarchy of ‘DR’ design.