From Chiapas to Palestine: Historicizing Social Movement Media Before and Beyond the Arab Uprisings

Critical scholarship investigating media and the Arab uprisings has called for “a return to history.” This article argues that researching the contemporary constraints and opportunities of social movement media in the Arab region requires historicizing such practices. Reflecting on the role of media activism within the Arab uprisings necessitates broadening the historical context of social movement media in the Middle East and North Africa (MENA) region by investigating the diversity of media tactics and alternative political economies mobilized to resist the military-industrial communications complex. This article develops a political economy framework to historicize social movement media practices from Chiapas to Palestine and provides a critical reflection on the use of media for revolution before and beyond the Arab uprisings. Learning from the long and global history of revolutionary media struggle is beneficial to media activists and researchers working in the MENA region.

5G Numerologies Assessment for URLLC in Industrial Communications

The fifth-generation (5G) network is presented as one of the main options for Industry 4.0 connectivity. Ultra-Reliable and Low Latency Communications (URLLC) is the 5G service category used by critical mechanisms, with a millisecond end-to-end delay and reduced probability of failure. 5G defines new numerologies, together with mini-slots for a faster scheduling. The main challenge of this is to select the appropriate numerology according to radio conditions. This fact is very important in industrial scenarios, where the fundamental problems are interference and multipath propagation, due to the presence of concrete walls and large metallic machinery and structures. Therefore, this paper is focused on analyzing the impact of the numerology selection on the delay experienced at radio link level for a remote-control service. The study, which has been carried out in a simulated cellular factory environment, has been performed for different packet sizes and channel conditions, focusing on outliers. Evaluation results show that not always a higher numerology, with a shorter slot duration, is appropriate for this type of service, particularly under Non-Line-of-Sight (NLOS) conditions.

DETERMINING THE VALUE STREAM IN THE PROCESS OF TESTING KNOWLEDGE OF LABOR PROTECTION REQUIREMENTS (ON THE EXAMPLE OF THE VOLGOGRAD BRANCH OF PJSC "RTK")

According to the structure of the objects served, operating organizations have geographically remote workplaces. These traditionally include organizations in the telecommunications industry, electric power, gas industry, oil industry, and others. With the development of telecommunication channels and electronic data transmission technologies, more and more enterprises in the world use the labor of workers who work remotely. There is a trend in the world to increase the number of jobs that operate remotely from each other. This is due to global cooperation, territorial unevenness in the distribution of qualified human resources, as well as different costs depending on the region for the organization of jobs. In the context of the spread of COVID-19 and other infections, industrial communications via telecommunications channels in some cases become the only possible and safe way. Despite the territorial remoteness of workplaces from each other, the requirements of labor legislation for training and testing the knowledge of labor protection requirements for employees remain. The article presents a map of creating a value stream in the process of testing knowledge of labor protection requirements in the Volgograd branch of PJSC «RTK». The map visualizes the process and shows operations that create value for the company when checking the employee’s knowledge of occupational safety requirements. The analysis of the transport component during the verification of knowledge of labor protection requirements is given. The article presents the necessary and sufficient types and methods of transmitting information in the process of checking knowledge of labor protection requirements. It is concluded that it is expedient for remote workplaces to switch from face-to-face testing of knowledge of labor protection requirements to remote testing.

Experimental Interference Robustness Evaluation of IEEE 802.15.4-2015 OQPSK-DSSS and SUN-OFDM Physical Layers for Industrial Communications

In this paper, we experimentally evaluate and compare the robustness against interference of the OQPSK-DSSS (Offset Quadrature Phase Shift Keying-Direct Sequence Spread Spectrum) and the SUN-OFDM (Smart Utility Network-Orthogonal Frequency Division Multiplexing) physical layers, as defined in the IEEE 802.15.4-2015 standard. The objective of this study is to provide a comprehensive analysis of the impact that different levels of interference produce on these modulations, in terms of the resulting PDR (Packet Delivery Ratio) and depending on the length of the packet being transmitted. The results show that the SUN-OFDM physical layer provides significant benefits compared to the ubiquitous OQPSK-DSSS in terms of interference robustness, regardless of the interference type and the packet length. Overall, this demonstrates the suitability of choosing the SUN-OFDM physical layer when deploying low-power wireless networks in industrial scenarios, especially taking into consideration the possibility of trading-off robustness and spectrum efficiency depending on the application requirements.