A new service-oriented grid-based method for AIoT application and implementation

The traditional three-layer Internet of things (IoT) model, which includes physical perception layer, information transferring layer and service application layer, cannot express complexity and diversity in agricultural engineering area completely. It is hard to categorize, organize and manage the agricultural things with these three layers. Based on the above requirements, we propose a new service-oriented grid-based method to set up and build the agricultural IoT. Considering the heterogeneous, limitation, transparency and leveling attributes of agricultural things, we propose an abstract model for all agricultural resources. This model is service-oriented and expressed with Open Grid Services Architecture (OGSA). Information and data of agricultural things were described and encapsulated by using XML in this model. Every agricultural engineering application will provide service by enabling one application node in this service-oriented grid. Description of Web Service Resource Framework (WSRF)-based Agricultural Internet of Things (AIoT) and the encapsulation method were also discussed in this paper for resource management in this model.

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A Study on Layer Wise Attacks on Service Oriented Architecture in Internet of Things and Their Defensive Mechanisms

International Journal of Advanced Research in Computer Science and Software Engineering ◽

10.23956/ijarcsse/sv7i5/0118 ◽

2017 ◽

Vol 7 (5) ◽

pp. 982-989

Author(s):

A. Vinothini ◽

◽

G. Padmavathi ◽

Keyword(s):

Internet Of Things ◽

Service Oriented Architecture ◽

Service Oriented ◽

Defensive Mechanisms

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Application of intelligent orienteering based on Internet of things

EURASIP Journal on Wireless Communications and Networking ◽

10.1186/s13638-020-01814-1 ◽

2020 ◽

Vol 2020 (1) ◽

Author(s):

Donghui Zhang ◽

Ruijie Liu

Keyword(s):

Internet Of Things ◽

Network Architecture ◽

Emergency Services ◽

Simulation Experiment ◽

Experimental Studies ◽

Signal Stability ◽

Anchor Nodes ◽

Set Up ◽

The Relationship ◽

The Internet Of Things

Abstract Orienteering has gradually changed from a professional sport to a civilian sport. Especially in recent years, orienteering has been widely popularized. Many colleges and universities in China have also set up this course. With the improvement of people’s living conditions, orienteering has really become a leisure sport in modern people’s life. The reduced difficulty of sports enables more people to participate, but it also exposes a series of problems. As the existing positioning technology is relatively backward, the progress in personnel tracking, emergency services, and other aspects is slow. To solve these problems, a new intelligent orienteering application system is developed based on the Internet of things. ZigBee network architecture is adopted in the system. ZigBee is the mainstream scheme in the current wireless sensor network technology, which has many advantages such as convenient carrying, low power consumption, and signal stability. Due to the complex communication environment in mobile signal, the collected information is processed by signal amplification and signal anti-interference technology. By adding anti-interference devices, video isolators and other devices, the signal is guaranteed to the maximum extent. In order to verify the actual effect of this system, through a number of experimental studies including the relationship between error and traffic radius and the relationship between coverage and the number of anchor nodes, the data shows that the scheme studied in this paper has a greater improvement in comprehensive performance than the traditional scheme, significantly improving the accuracy and coverage. Especially the coverage is close to 100% in the simulation experiment. This research has achieved good results and can be widely used in orienteering training and competition.

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Investigation of the Pressure Dependent Hydrogen Solubility in a Martensitic Stainless Steel Using a Thermal Agile Tubular Autoclave and Thermal Desorption Spectroscopy

Metals ◽

10.3390/met11020231 ◽

2021 ◽

Vol 11 (2) ◽

pp. 231

Author(s):

Patrick Fayek ◽

Sebastian Esser ◽

Vanessa Quiroz ◽

Chong Dae Kim

Keyword(s):

Stainless Steel ◽

Thermal Desorption ◽

Hydrogen Diffusion ◽

Martensitic Stainless Steel ◽

Thermal Desorption Spectroscopy ◽

Hydrogen Uptake ◽

Hydrogen Solubility ◽

Automotive Components ◽

Set Up ◽

Service Application

Hydrogen is nowadays in focus as an energy carrier that is locally emission free. Especially in combination with fuel-cells, hydrogen offers the possibility of a CO2 neutral mobility, provided that the hydrogen is produced with renewable energy. Structural parts of automotive components are often made of steel, but unfortunately they may show degradation of the mechanical properties when in contact with hydrogen. Under certain service conditions, hydrogen uptake into the applied material can occur. To ensure a safe operation of automotive components, it is therefore necessary to investigate the time, temperature and pressure dependent hydrogen uptake of certain steels, e.g., to deduct suitable testing concepts that also consider a long term service application. To investigate the material dependent hydrogen uptake, a tubular autoclave was set-up. The underlying paper describes the set-up of this autoclave that can be pressurised up to 20 MPa at room temperature and can be heated up to a temperature of 250 °C, due to an externally applied heating sleeve. The second focus of the paper is the investigation of the pressure dependent hydrogen solubility of the martensitic stainless steel 1.4418. The autoclave offers a very fast insertion and exertion of samples and therefore has significant advantages compared to commonly larger autoclaves. Results of hydrogen charging experiments are presented, that were conducted on the Nickel-martensitic stainless steel 1.4418. Cylindrical samples 3 mm in diameter and 10 mm in length were hydrogen charged within the autoclave and subsequently measured using thermal desorption spectroscopy (TDS). The results show how hydrogen sorption curves can be effectively collected to investigate its dependence on time, temperature and hydrogen pressure, thus enabling, e.g., the deduction of hydrogen diffusion coefficients and hydrogen pre-charging concepts for material testing.

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