Workplace surveillance: examining current instruments, limitations and legal background issues by Ulrike Hugl

“…This work starts with a fictive story of an employee, followed by a short presentation of surrounding viewpoints of organizational control and surveillance. …”
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Smart health-care systems for rheumatology by Suneeta Mohanty, Prasant Kumar Pattnaik

“…Smart health care comprises e-health, m-health, electronic resource management, smart and intelligent home services, and medical devices. Wireless sensors, radio-frequency identification technology, Internet of things, and machine learning (ML) algorithms are the underlying technology to implement smart health care. …”
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Thermal response of tissue to RF exposure from canonical dipoles at frequencies for future mobile communication systems by K. Foster, D. Colombi

“…These findings might have large implications on the development of future radio access technologies operating at the millimetre wave.…”
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Research on power flux-density at the earth’s surface produced by emissions from the steerable beam of LEO constellation system by Ying HUANG, Wei LI, Chen JIAN, Kang YAN

“…The power flux-density (PFD) is an interference criterion for protecting terrestrial service systems from space service systems.A calculation method on the PFD produced by the emissions from the steerable beam of low earth orbit (LEO) constellation system was given, and thus a compliance determination algorithm of the limits of PFD under specific steering angle was presented.On this basis, a compliance determination algorithm of the limits of PFD based on elevation traversal was proposed.Combined with the characteristics of LEO constellation system, the conditions to simplify the calculation of maximum PFD of steerable beam were demonstrated.Taking the Starlink system as the typical scenario, the PFD produced by the gateway beam was analyzed, and the correctness of the proposed method was verified by comparison with the results published by SpaceX.The results showed that the PFD of the gateway beam of the Starlink system in Ka frequency band atelevations below 20° exceeded the limits given in Radio Regulations.…”
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Communication and navigation integration for LEO constellations:status, opportunities, and challenges by Yafei ZHAO, Bing YAN, Yaohua SUN, Mugen PENG

“…With the growing maturity of millimeter wave technology and high-throughput satellite communication technology, as well as the urgent need for global broadband communication services, the construction of LEO giant communication constellation has attracted great attention, and up to thousands of satellites have been deployed.A large number of LEO communication satellites have realized multiple and repeated coverage of high-frequency radio frequency signals on the ground.At the same time, ground communication resources provide a hardware platform for signal reception and create conditions for the development of integrated communication and navigation.The status quo, opportunities and challenges of the integrated LEO navigation constellation were discussed, and the differences of resources required by the integrated LEO navigation constellation and the global navigation satellite system were emphatically expounded.In terms of space segment, ground segment and user segment, the conclusions and prospects for future research were presented.…”
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Novel UWB communication pulse design method by LIN Zhi-yuan, WEI Ping

“…The comparison were presented for the bit error rate （BER） performance analyses of the pulse position modula- tion time hopping ultra wideband （PPM TH UWB） impulse radio （IR） communication system employing the iterative combination pulse or the second derivative Gaussian pulse in the additive white Gaussian noise （AWGN） channel, multi- ple user interference （MUI） and multiple path channel. …”
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Review on the research of the global emergency communication spectrum by Xiaoyong LIU, Xixi FAN, Lin ZHU, Yuanxin YAO

“…The construction of an emergency private network is the necessity of unified command and dispatch communications in rescue of disasters, emergency response, and major activity safeguard.It is an important communication means of public safety protection.With the rapid development of radio technology, the traditional narrowband emergency communication system is difficult to meet the needs of multimedia data, interconnection, anti-interference and other needs under the new situation.Digitization, broadband and ubiquity have become the inevitable trend of the development of emergency private networks.First of all, the technical system and development trend of emergency communication were summarized, the global emergency communication research framework were introduced, the frequency planning and current use status of the emergency private network in the United States, Europe, Asia-Pacific and other countries and regions were analyzed.Finally, combine with the current frequency planning, suggestions for the construction of China’s emergency private network from the aspects of technology trends, industrial development, frequency band selection, and construction mode were presented.…”
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A Semi-Stochastic Propagation Model for the Study of Beam Tilting in Cellular Systems by Konstantinos B. Baltzis

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Prediction of Inadequate Bowel Preparation Using Total and Segmental Colon Transit Time in Patients with Chronic Constipation: Some Different Outcomes by Chunying Zhai, Qiyang Huang, Ningli Chai, Wengang Zhang, Enqiang Linghu

“…Aims. Radio-opaque markers have been widely used in the study of colon motility in patients with chronic functional constipation (FC). …”
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Ultra-Compact Slitted Flower-Shaped Dual-Band Monopole Antenna for Modern Portable Devices by Jeremiah O Abolade, Dominic B. O. Konditi

“…The fabrication and measurement of the proposed antenna prototype are presented. The parametric study of the proposed structure is performed and presented. …”
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The nomination of Rev. Kazimierz Rolewski as bishop of Katowice and the reasons for the refusal by Maciej Szczepaniak

“…Kazimierz Rolewski (1887–1936) — parish priest in the Archdiocese of Poznań, rector of the theological seminary, and radio preacher — remains an inspiring figure to this day, as evidenced by the ongoing beatification process. …”
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Influencers and influencer marketing – indispensable part of the business of modern companies by Diana Karakaš, Hrvoje Zovko

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Widening Frequency Envelope of an Antenna-Amplifier System With Coupling Structure by Jaanus Kalde, Anu Lehtovuori, Alvo Aabloo, Ville Viikari

“…Although large coupling is traditionally avoided in antenna arrays, we show that coupling might offer an advantage. We present a coupling circuit enabling the study of coupling effects in a dipole antenna system without modifying amplifiers or radiating structures. …”
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Anomaly Detection in High Mobility MDT Traces Through Self-Supervised Learning by J. M. Sanchez-Martin, C. Gijon, M. Toril, S. Luna-Ramirez, V. Wille

“…Radio access network optimization is a critical task in current cellular systems. …”
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Design and Characterization of a Miniaturized Antenna Based on Palisade-Shaped Metasurface by Ximing Li, Jingjing Yang, Zhigang Chen, Pengshan Ren, Ming Huang

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Wideband and UWB Antennas for Wireless Applications: A Comprehensive Review by Renato Cicchetti, Emanuela Miozzi, Orlandino Testa

“…A comprehensive review concerning the geometry, the manufacturing technologies, the materials, and the numerical techniques, adopted for the analysis and design of wideband and ultrawideband (UWB) antennas for wireless applications, is presented. Planar, printed, dielectric, and wearable antennas, achievable on laminate (rigid and flexible), and textile dielectric substrates are taken into account. …”
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Design of polling access control protocol in WSN based on FPGA by Long-jun LIU, Hong-wei DING, Qian-lin LIU, Zheng-gang LIU

“…MAC(media access control) protocol is a direct link between physical and network layer,which is one of the key protocols to ensure high efficient communication.According to the characteristics of WSN (wireless sensor network) nodes,the design and implementation of polling access control protocol based on FPGA (field programmable gate array) were presented for the first time.The design made full use of the characteristics of flexibility and reconfigurability of FPGA.The method of combination of the hardware circuit description language Verilog HDL and the principle diagram was adopted,using Quartus II 8.0 to carry on the synthesis and routing,testing in the DE2.The design has the characteristics of good real-time,high reliability,strong portability,and can effectively reduce the transmission delay and improve the bus utilization.The designed system can be widely used in WSN,software radio network,ad hoc networks,military integrated service network,mobile communications networks,Internet of things as well as other fields.…”
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Position related lightweight Sybil detection approach in VANET by Yan XIN, Xia FENG, Ting-ting LI

“…In VANET,the Sybil attack simultaneously using multiple forged identities can easily cause the injustice of resource usage and make networks in a mess by distributing false messages.To solve this problem,an event-driven lightweight algorithm was proposed,which could identify vehicles false position quickly.When one vehicle appeared inside another's safety zone,a geometrical cross-recognition algorithm to calculate the overlap between vehicles to detect false position claiming was presented.At the same time,according to the neighbors within the confirming vehicle's radio range,position deviation matrix was established further to identify the Sybil node of two overlap vehicles.The performance analysis and simulation results show that the lightweight algorithm driven by safety zone demonstrates fast identification and high detection rate,especially when GPS error is very low.The imported safety zone can also balance the communication load impacting by heavy vehicular density.And the communication processing delay is lower than other approaches.…”
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Development of Algorithms for Processing Images of Large Volumes by O. N. Vinichuk, V. I. Dravitsa

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An Asymmetrical Mixed Higher-Order Discontinuous Galerkin Time Domain Method for Electromagnetic Scattering from the Plasma Sheath around a Hypersonic Vehicle by Jirong Guo, Yiping Han

“…The plasma sheath during reentry of hypersonic vehicle is an unmagnetized and weakly ionized nonuniform plasma flow, which causes radio frequency blackout and strong plasma attenuation of electromagnetic wave. …”
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