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Copyright of Experimental Technology & Management is the property of Experimental Technology & Management Editorial Office and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Objectives: Nowadays, a vast number of sensors and observation platforms bring a significant challenge for city perception. In the study, we focus on developing of a smart city tempo‑spatial perception system. The concept of smart city awareness base station (SCABS) is proposed in this study, and the SCABS architecture considers the above problems. Methods: Firstly, we systematically reviewed the requirements and the complexity of smart city perception and summarized the development process and network architecture of smart city perception technology systems. On this basis, the challenges of ubiquitous access, trusted perception and intelligent management in future smart city perception are addressed. Then, this paper sorted out the demand for future city perception services and constructed the architecture of SCABS. Finally, we standardized the technical indicators and service capabilities of SCABS. Results: We constructed the prototype of SCABS. According to the qualitative analysis and experiments based on real environment, we found that SCABS with unified access, integrated management, and edge intelligence can meet the access and management ability of multi‑platform and high‑density sensing resources. Conclusions: SCABS would act an essential role in the smart city perception in the future. As a cyber‑physical infrastructure, it expects to cover various scenarios in the city with multiple heterogeneous perception access and hybrid access of multi‑protocols, and to automatically support the multi‑platform coordinated control. The SCABS meets global, accurate, heterogeneous, and multiple sensory perception. The SCABS is expected to be one of the critical infrastructures of the future smart city. [ABSTRACT FROM AUTHOR]

China’s Beidou-3 global satellite navigation system, short for Beidou system（BDS）, was fully operational on July 31, 2020, which has become the basis of the interconnection and intelligence of all things in the information society. Based on the analysis of the architecture and key technologies of Internet of Things （IoT）, the service types of BDS, and the main mode of BDS applications in IoT, this paper proposes a BDSIoT technology architecture, which takes BDS’s positioning and timing as the main perception information, takes the short message and other characteristic services as the main information transmission means, and integrates Internet and artificial intelligence technology. Then, the typical application of BDS services in the IoT field is further analyzed, and the application mode of“IoT + BDS”is put forward. Finally, taking smart city, intelligent transportation and other applications as examples, the challenge of BDS is analyzed, the development advice is given, and the new driving force of BDS for innovation driven development is proved. [ABSTRACT FROM AUTHOR]

Copyright of Public Art is the property of Shanghai Fine Arts Publisher Ltd. co. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

The lightweight block ciphers could be widely used in various applications, such as smart cities, internet of things and cloud computation and so on, in order to protect data and information secure. Midori was a lightweight block cipher proposed in ASIACRYPT 2015. Its block size had two scenarios, i. e, 64 bit and 128 bit, denoted by Midori 64 and Midori 128 respectively. Up to now, there were no results about meet-in-the-middle attacks on Midori 128. This paper developed a meet-inthe-middle attack on 10-round Midori 128 for the first time. Specifically, studying the basic construction and key schedule of Midori 128, this paper constructed a 7-round distinguisher on Midori 128 by using the differential enumeration and key-dependent sieve techniques. Through appending one round at its top and two rounds at its bottom, this paper mounted a meet-in-themiddle attack on 10-round Midori 128. In the attack, time-memory tradeoff technique and some weak subkeys were considered so as to reduce the time complexity of online phase. Finally, the data, time and memory complexities of our attack are 2125 chosen plaintexts, 2126. 510-round encryptions and 2105128-bit blocks, respectively. [ABSTRACT FROM AUTHOR]

Copyright of Computer Measurement & Control is the property of Magazine Agency of Computer Measurement & Control and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)