scholarly journals Implementation of Geospatial Labeling using Time of Arrival and Cramer-Rao bound approach

2018 ◽  
Vol 7 (2.4) ◽  
pp. 81
Author(s):  
M Thanjaivadivel ◽  
Ignatious K. Pious

Internet of Things (IoT) is one of the most emerging technology worldwide and also plays pivotal role in sensing data and also provide communication between “things”. In this paper, we implement calculation for geospatial labeling for Internet-of-Things (IoT) sort applications, which we indicate as location-of-things (LoT). The hidden thought of LoT applications is to utilize minimal effort of TW-ToA extending gadgets to perform restriction of labels. Two Way(TW) is a agreeable technique for deciding the range between two radio handset units. At the point when synchronization of the oscillators of the included transmitters is not reasonable, henceforth the tickers vary, at that point applying the estimation as a two courses go to the beneficiary and reflected back to the transmitter makes up for a portion of the stage contrasts between the oscillators included. We first propose TW-ToA localization algorithms may encounter execution debasement in situations where a portion of the APs are outside the correspondence scope of the labels. We at that point demonstrate that we can make utilization of the audible data (which demonstrates whether an AP is capable or unfit to speak with the labels). We also re-formulate the restriction issue as a factual nonlinear estimation issue. To avoid ambiguity problem that arises only at few  APs this has been sorted using Cramer-Rao bound approach. 

2014 ◽  
Vol 701-702 ◽  
pp. 957-960
Author(s):  
Feng Xie

The equipment maintenance in large marine ships may rely on Internet of Things to provide monitoring of equipment status instantly. The data volume of sensing data is huge as the number of equipments is large. It is critical to decrease the communication overhead of uploading sensing data for efficiently and timely monitoring. In this paper, we propose several coding algorithms by using data context that is modeled by our normal forms on the base of our observations. The communication efficiency is improved, which is justified by formal analysis and rigorous proof. We also propose several network plan policies for further improvement of the communication efficiency by using data context and cluster head deployment.


2013 ◽  
Vol 846-847 ◽  
pp. 1608-1611 ◽  
Author(s):  
Hui Jie Ding

As more and more cars are in service, the traffic jam becomes a serious problem in our society. At the same time, more and more sensors make the cars more and more intelligent, and this promotes the development of Internet of things. Real time monitoring the cars will produce massive sensing data, the Cloud computing gives us a good manner to solve this problem. In this paper, we propose a traffic flow data collection and traffic signal control system based on Internet of things and the Cloud computing. The proposed system contains two main parts, sensing data collection and traffic status control subsystem.


2021 ◽  
Vol 17 ◽  
Author(s):  
Lakshmipathy Muthukrishnan

: Biocatalysts or enzymes have a pivotal role in speeding up most of the biochemical reactions that drives life processes. Although substrate specific and promising, there are some pitfalls that limit their use for wide application. To counteract the shortcomings, artificial enzymes possessing enzyme characteristics with additional qualities have been devised and that kick-started in the late 2000s. This review aims to provide an overview of nanozymes, designing concept, nanomaterials and applications. To begin with, the limitations encountered by natural enzymes and its replacement with nanozymes have been highlighted. Secondly, how nanozymes evolved in due course of time, classification and engineering strategies have been briefly described. Most importantly, the engineering of nanozymes for improved catalytic activities have also been discussed. A clear distinction between the enzymatic-mimic for various clinical and bioimaging applications has been critically reviewed. With this rapidly emerging technology, there would be a great demand pertaining to scalability, biosafety, catalytic diversity and environmental challenge needs much consideration.


2019 ◽  
Vol 8 (2S11) ◽  
pp. 3539-3543

In this present state-of-the-art, Internet of Things (IOT) is an emerging technology that is making our world smarter. WiFi enabled greenhouse monitoring is an intelligent system which is based on several sensors that monitor various changes in temperature, gas concentrations, light and soil moisture in the greenhouse. This comes with an added advantage or provision of linking all these sensors to your mobile phones or computers/laptops using Wi-Fi and internet services through the concept of Internet of Things (IoT), so that if there are any fluctuations, you will be notified immediately. This provides convenient control, through manual operations if necessary, of the greenhouse anytime and anywhere as long as the device is connected to the internet. In this an artificial environment is created so that the crops yield more crops per square meter compared to open field cultivation since the micro climatic parameters that determine crop yield are continuously examined and controlled to ensure that an optimum environment is created.


2020 ◽  
Author(s):  
Tanweer Alam

<p>The fog computing is the emerging technology to compute, store, control and connecting smart devices with each other using cloud computing. The Internet of Things (IoT) is an architecture of uniquely identified interrelated physical things, these physical things are able to communicate with each other and can transmit and receive information. <a>This research presents a framework of the combination of the Internet of Things (IoT) and Fog computing. The blockchain is also the emerging technology that provides a hyper, distributed, public, authentic ledger to record the transactions. Blockchains technology is a secured technology that can be a boon for the next generation computing. The combination of fog, blockchains, and IoT creates a new opportunity in this area. In this research, the author presents a middleware framework based on the blockchain, fog, and IoT. The framework is implemented and tested. The results are found positive. </a></p>


Author(s):  
Olof Magnusson ◽  
Rikard Teodorsson ◽  
Joakim Wennerberg ◽  
Stig Arne Knoph

LoRaWAN (long-range wide-area network) is an emerging technology for the connection of internet of things (IoT) devices to the internet and can as such be an important part of decision support systems. In this technology, IoT devices are connected to the internet through gateways by using long-range radio signals. However, because LoRaWAN is an open network, anyone has the ability to connect an end device or set up a gateway. Thus, it is important that gateways are designed in such a way that their ability to be used maliciously is limited. This chapter covers relevant attacks against gateways and potential countermeasures against them. A number of different attacks were found in literature, including radio jamming, eavesdropping, replay attacks, and attacks against the implementation of what is called beacons in LoRaWAN. Countermeasures against these attacks are discussed, and a suggestion to improve the security of LoRaWAN is also included.


ETRI Journal ◽  
2020 ◽  
Vol 42 (6) ◽  
pp. 976-986 ◽  
Author(s):  
Jun Wu ◽  
Cong Wang ◽  
Yue Yu ◽  
Tiecheng Song ◽  
Jing Hu

2020 ◽  
Vol 17 (9) ◽  
pp. 4207-4212
Author(s):  
Padala Neeraja ◽  
Durgesh Nandan

The internet of things is nothing but the interconnection of a number of systems or objects in which the internal circuit consists of a number of sensors and connectors. The main aim of the internet of things is to transfer information and to make an interaction between the systems. Through IoT, all the systems can be sensed and all the home appliances will be controlled remotely through a mobile device. It creates an integration of more and more networks in the future. The IoT is a very important emerging technology nowadays in which the main applications of IoT are smart grids, smart homes, etc. As the number of devices was increasing nowadays IoT plays a very significant role in present society. So, the challenges were increasing and there will be a machine to machine communication and also with the user. It reduces human efforts as it is machine-dependent. It acts according to the instructions given by the user.


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