scholarly journals Process Management in IoT Operating Systems: Cross-Influence between Processing and Communication Tasks in End-Devices

Sensors ◽  
2019 ◽  
Vol 19 (4) ◽  
pp. 805 ◽  
Author(s):  
Roberto Rodriguez-Zurrunero ◽  
Ramiro Utrilla ◽  
Alba Rozas ◽  
Alvaro Araujo
Keyword(s):  
Process Management ◽  
Edge Computing ◽  
Communication Performance ◽  
Processor Time ◽  
Computational Load ◽  
Wireless Protocols ◽  
Computing Paradigm ◽  
Close Relationship ◽  
Level Information ◽  
High Level

The emergence and spread of Internet of Things (IoT) technologies along with the edge computing paradigm has led to an increase in the computational load on sensor end-devices. These devices are now expected to provide high-level information instead of just raw sensor measurements. Therefore, the processing tasks must share the processor time with the communication tasks, and both of them may have strict timing constraints. In this work, we present an empirical study, from the edge computing perspective, of the process management carried out by an IoT Operating System (OS), showing the cross-influence between the processing and communication tasks in end-devices. We have conducted multiple tests in two real scenarios with a specific OS and a set of wireless protocols. In these tests, we have varied the processing and communication tasks timing parameters, as well as their assigned priority levels. The results obtained from these tests demonstrate that there is a close relationship between the characteristics of the processing tasks and the communication performance, especially when the processing computational load is high. In addition, these results also show that the computational load is not the only factor responsible for the communication performance degradation, as the relationship between the processing tasks and the communication protocols timing parameters also plays a role. These conclusions should be taken into account for future OSs and protocol developments.

scholarly journals Geometric algorithms for sensor networks

2012 ◽  
Vol 370 (1958) ◽  
pp. 27-51 ◽  
Author(s):  
Jie Gao ◽  
Leonidas Guibas
Keyword(s):  
Sensor Networks ◽  
Physical Space ◽  
Sensor Nodes ◽  
Information Discovery ◽  
Network Localization ◽  
Close Relationship ◽  
Level Information ◽  
Geometric Character ◽  
High Level ◽  
Relationship Of

This paper surveys the use of geometric methods for wireless sensor networks. The close relationship of sensor nodes with their embedded physical space imposes a unique geometric character on such systems. The physical locations of the sensor nodes greatly impact on system design in all aspects, from low-level networking and organization to high-level information processing and applications. This paper reviews work in the past 10 years on topics such as network localization, geometric routing, information discovery, data-centric routing and topology discovery.

scholarly journals Inference of Mood State Indices by Using a Multimodal High-Level Information Fusion Technique

IEEE Access ◽  
2021 ◽  
pp. 1-1
Author(s):  
Chih-Hua Tai ◽  
Kuo-Hsuan Chung ◽  
Ya-Wen Teng ◽  
Feng-Ming Shu ◽  
Yue-Shan Chang
Keyword(s):  
Information Fusion ◽  
Mood State ◽  
Fusion Technique ◽  
Level Information ◽  
Information Fusion Technique ◽  
High Level

scholarly journals The Sound of Silence?

2005 ◽  
Vol 19 (5) ◽  
pp. 392-398 ◽  
Author(s):  
T. Hassall ◽  
J. Joyce ◽  
M.D. Bramhall ◽  
I.M. Robinson ◽  
J.L. Arquero
Keyword(s):  
Communication Skills ◽  
Engineering Students ◽  
Communication Apprehension ◽  
Vocational Choice ◽  
Communication Performance ◽  
Vocational Skills ◽  
Communication Development ◽  
Current Thinking ◽  
High Level

Employers often consider graduates to be unprepared for employment and lacking in vocational skills. A common demand from them is that the curriculum should include ‘communication skills’, as specific skills in their own right and also because of the central role that such skills can play in developing other desirable attributes. Current thinking in communication has indicated a split between communication apprehension and communication development. There are indications that techniques designed to develop communication skills will not resolve communication apprehension and that, if an individual has a high level of communication apprehension, these techniques will not result in improved communication performance. This paper compares and contrasts the levels and profiles of communication apprehension exhibited by accounting and engineering students. The implications of the findings are then discussed and the need for further research in the area of vocational choice is identified.

An Edge-Computing Paradigm for Internet of Things over Power Line Communication Networks

IEEE Network ◽  
2020 ◽  
Vol 34 (2) ◽  
pp. 262-269
Author(s):  
Yuwen Qian ◽  
Long Shi ◽  
Jun Li ◽  
Xiangwei Zhou ◽  
Feng Shu ◽  
...  
Keyword(s):  
Internet Of Things ◽  
Communication Networks ◽  
Power Line ◽  
Edge Computing ◽  
Power Line Communication ◽  
Computing Paradigm

scholarly journals Bioindication of soil of unauthorized landfills in the Carpathian region

2021 ◽  
Author(s):  
L. Symochko ◽  
О. Hafiiyak ◽  
O. Demyanyuk
Keyword(s):  
Solid Waste ◽  
Ecological Status ◽  
Biosphere Reserve ◽  
Soil Microbial ◽  
Microbiological Processes ◽  
Waste Storage ◽  
Carpathian Region ◽  
Close Relationship ◽  
Organotrophic Bacteria ◽  
High Level

The article presents the results of monitoring the area adjacent to the Carpathian Biosphere Reserve for the detection of unauthorized landfills and examines the ecological status of these soils. Four unauthorized landfills of solid waste in Pidhirna, Stanislav, Steryshora, and Feresok tracts with an area of 0.15 to 1.5 ha with a waste accumulation period of 12–22 years and different morphological composition which had a significant impact on the ecological status of the soil have been identified. Bioindication methods have shown changes in the soil microbial cenoses under the direct influence of unauthorized landfills of solid waste, namely increased the number of organotrophic bacteria and micromycetes and decreased number of nitrogen-fixing microorganisms. The highest number of bacteria using nitrogen of organic compounds (25.36–28.61 million CFU/g soil) and micromycetes (51.8–76.8 thousand CFU/g soil) was fixed in the soils in the tract PidhirnaandFeresok with advantage of 1.5–1.7 times and 2.5–3.8 times compared to the soil of the protected area. Increasing the number of pedotrophic and oligotrophic microorganisms and microorganisms that assimilate organic forms of nitrogen, on average, 2.70, 2.84 and 1.48 times has been affected the direction of the main soil-microbiological processes. The coefficient of oligotrophicity varied in the range of 0.21–0.30, mineralization-immobilization one — 1.22–1.38, pedotrophic one — 0.55–0.96 with a maximum in the soil of the landfill in the tracts of Feresok and Pidhirna, which indicates the strengthening of microbiological processes of mineralization and decomposition of soil organic matter, including humus compounds. A close relationship was established between the duration of solid waste storage in a certain area and the level of soil phytotoxicity (r = 0.92). In the soil of landfills in Pidhirna, Steryshora and Feresok tracts, the phytotoxicity index is significant (over 50%), which indicates a high level of soil ecosystem pollution and increased environmental risks in the area of unauthorized accumulation of solid waste.

scholarly journals Microtomographic Analysis of Impact Damage in FRP Composite Laminates: A Comparative Study

2013 ◽  
Vol 2013 ◽  
pp. 1-10 ◽  
Author(s):  
M. Alemi-Ardakani ◽  
A. S. Milani ◽  
S. Yannacopoulos ◽  
L. Bichler ◽  
D. Trudel-Boucher ◽  
...  
Keyword(s):  
Composite Laminates ◽  
Impact Damage ◽  
Glass Fibers ◽  
Impact Testing ◽  
Frp Composites ◽  
Frp Composite ◽  
Flexural Testing ◽  
Close Relationship ◽  
High Level ◽  
Tomographic Analysis

With the advancement of testing tools, the ability to characterize mechanical properties of fiber reinforced polymer (FRP) composites under extreme loading scenarios has allowed designers to use these materials in high-level applications more confidently. Conventionally, impact characterization of composite materials is studied via nondestructive techniques such as ultrasonic C-scanning, infrared thermography, X-ray, and acoustography. None of these techniques, however, enable 3D microscale visualization of the damage at different layers of composite laminates. In this paper, a 3D microtomographic technique has been employed to visualize and compare impact damage modes in a set of thermoplastic laminates. The test samples were made of commingled polypropylene (PP) and glass fibers with two different architectures, including the plain woven and unidirectional. Impact testing using a drop-weight tower, followed by postimpact four-point flexural testing and nondestructive tomographic analysis demonstrated a close relationship between the type of fibre architecture and the induced impact damage mechanisms and their extensions.

High-level information fusion and situation awareness

2009 ◽  
Vol 10 (1) ◽  
pp. 2-5 ◽  
Author(s):  
Mieczyslaw M. Kokar ◽  
Gee Wah Ng
Keyword(s):  
Information Fusion ◽  
Situation Awareness ◽  
Level Information ◽  
High Level
Sign in / Sign up

Export Citation Format

Share Document