scholarly journals Comprehensive Calibration Platform Based on Instrument-shared Networks

2021 ◽  
Vol 693 (1) ◽  
pp. 012094
Author(s):  
Bing Lu ◽  
Jun Zhang ◽  
Zini Jian ◽  
Wei Zhou ◽  
Xianpei Wang
Keyword(s):  
2011 ◽  
Vol 2011 ◽  
pp. 1-23 ◽  
Author(s):  
Miguel Díaz-Cacho Medina ◽  
Emma Delgado Romero ◽  
Antonio Barreiro Blas

Network and control relationship is an essential aspect in the design of networked control systems (NCSs). The design parameters are mainly centered in the transmission rate and in the packet structure, and some studies have been made to determine how transmission rate affects the network delay and consequently the stability of the control. In Internet, these analysis are mathematically complex due to the large number of different potential scenarios. Using empirical methods, this work deduces that the transmission scheduling problem of an NCS can be solved by designing an appropriate transport protocol, taken into account high and periodic sampling rates. The transport protocol features are determined by simulation, using a new test platform based on the NS2 network simulation suite, to develop control/network codesign solutions. Conclusions of this paper are that the transport features are packet-loss-based flow control, best effort, and fairness, supplemented by a packet priority scheme.


Sensors ◽  
2012 ◽  
Vol 12 (12) ◽  
pp. 16591-16613 ◽  
Author(s):  
Miguel Díaz-Cacho ◽  
Emma Delgado ◽  
José Prieto ◽  
Joaquín López

2020 ◽  
Vol 2020 ◽  
pp. 1-12 ◽  
Author(s):  
F. J. Farsana ◽  
K. Gopakumar

With the advancement in modern computational technologies like cloud computing, there has been tremendous growth in the field of data processing and encryption technologies. In this contest there is an increasing demand for successful storage of the data in the encrypted domain to avoid the possibility of data breach in shared networks. In this paper, a novel approach for speech encryption algorithm based on quantum chaotic system is designed. In the proposed method, classical bits of the speech samples are initially encoded in nonorthogonal quantum state by the secret polarizing angle. In the quantum domain, encoded speech samples are subjected to bit-flip operation according to the Controlled–NOT gate followed by Hadamard transform. Complete superposition of the quantum state in both Hadamard and standard basis is achieved through Hadamard transform. Control bits for C-NOT gate as well as Hadamard gate are generated with a modified Lu˙-hyperchaotic system. Secret nonorthogonal rotation angles and initial conditions of the hyperchaotic system are the keys used to ensure the security of the proposed algorithm. The computational complexity of the proposed algorithm has been analysed both in quantum domain and classical domain. Numerical simulation carried out based on the above principle showed that the proposed speech encryption algorithm has wider keyspace, higher key sensitivity and robust against various differential and statistical cryptographic attacks.


2020 ◽  
Vol 68 (5) ◽  
pp. 701-718
Author(s):  
Melinda Vandenbeld Giles

Given the precarity and mobility of neoliberalism, there has been increasing interest into constructs of ‘home’. In this article, the author defines ‘home’ as an active and relational process encompassing interactions between materiality and immateriality. Participant observation research conducted amongst shelter families in Toronto, Canada, living in motels can shed light on some of these larger global conversations about what ‘home’ is, and particularly, what it is not. These motels are utilized as part of the City of Toronto Shelter, Support and Housing Administration providing free shelter to impoverished families in need. Social workers, shelter managers and local faith group volunteers assert that the motels should be considered ‘home’ and the problem is that the women living in the motels with their children treat the physical space as transitory. In contrast, the women assert that the motel space is not a home and can never be made into one. The author argues that for these women, there are three critical elements missing in the motel: control over space, safety/security and privacy. The assertion that the motel space is not a home is a significant form of resistance to the regulatory bureaucratic structuring of daily life. However, despite this absence of home, the women feel strong identification as mothers and have formed systems of informal shared networks. This research helps to further illuminate not only our understandings of ‘home’, but also deepen and complicate normative associations equating ‘home’ with physical structure, domesticity and family.


2013 ◽  
Vol 114 (11/12) ◽  
pp. 507-526 ◽  
Author(s):  
Keren Dali

Purpose – The purpose of this paper is to investigate the potential of readers' advisory (RA) in libraries to help immigrants with psychological and socio-cultural adaptation in a new country. Design/methodology/approach – The data were empirically collected from a sample of Russian-speaking immigrant readers residing in the Greater Toronto Area, Ontario, Canada, by means of background surveys and in-depth interviews. Findings – The RA interaction is not merely a conversation about leisure books; it is a powerful intercultural encounter that has the potential to raise the levels of intimacy and attraction between host and immigrant populations, break negative stereotypes, help to build shared networks and create favorable contacts, change intergroup attitudes, and improve readers' mastery of the second language and knowledge of a new country. Originality/value – This article makes a contribution to three areas related to RA. It provides insight into the views and perceptions of RA by a selected group of readers; it gives voice to immigrant readers whose experiences with RA are particularly under-represented in the Library and Information Science literature; and it conceptualizes the RA interaction as an intercultural encounter, using the uncertainty reduction based theory of intercultural adaptation to frame the discussion.


Author(s):  
Fernanda R. Rosa

This research paper examines the emergence of shared networks in Tseltal and Zapoteco communities in Chiapas and Oaxaca (Mexico): internet first mile signal-sharing practices that articulate interconnection infrastructure and coexistence values to extend the internet to areas where the services of existing larger internet service providers are unsatisfactory or unavailable. In the case studies analyzed, indigenous people become internet codesigners by infrastructuring for their own local networks and interconnecting to the global internet. The paper argues that a hybrid materializes at the level of network interconnection when comunalidad, or the way of these communities, supported by unlicensed frequencies of the electromagnetic spectrum, towers, radio antennas, houses rooftops, routers, and cables meet the values of the internet service providers and their policies. Shared networks are a result of what these arrangements both enact and constrain, and the evidence of vivid struggles of Latin-centric indigenous networks towards a pluriversal internet.


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