LAW OF PHYSIOLOGIC AGING AS DERIVED FROM LONG RANGE DATA ON REFRACTION OF THE HUMAN EYE

1945 ◽  
Vol 34 (5) ◽  
pp. 378-388 ◽  
Author(s):  
F. BERNSTEIN ◽  
M. Bernstein
Keyword(s):  
2016 ◽  
Vol 17 (5) ◽  
pp. 1368-1380 ◽  
Author(s):  
Keqiang Li ◽  
Xiao Wang ◽  
Youchun Xu ◽  
Jianqiang Wang

2015 ◽  
Vol 47 (36) ◽  
pp. 3874-3890 ◽  
Author(s):  
Vasilios Plakandaras ◽  
Periklis Gogas ◽  
Rangan Gupta ◽  
Theophilos Papadimitriou

Sensors ◽  
2021 ◽  
Vol 21 (8) ◽  
pp. 2772
Author(s):  
Wiktor Woźniak ◽  
Mieczysław Jessa

The paper presents a long range data acquisition chain operating in areas without access to the electricity grid or communication infrastructure built with unmanned aerial vehicles (UAVs). It is assumed that the length of the network chain significantly exceeds the flight range of a single drone. To build such a network three basic problems have to be solved. The first is energy harvesting for battery charging. The second concerns the choice of drone models that can cover a given distance in the shortest time. The third problem is the reduction of the flight range of drones as a function of payload mass. The evaluation of the proposed method is based on the results of simulations and cost analysis of 54 drones and 25 solar cells. The analysis ends with a proposition of seven steps that can help to choose the most suitable drone model for a given task.


Sensors ◽  
2021 ◽  
Vol 21 (8) ◽  
pp. 2774
Author(s):  
Shaik Vaseem Akram ◽  
Rajesh Singh ◽  
Mohammed A. AlZain ◽  
Anita Gehlot ◽  
Mamoon Rashid ◽  
...  

Long-range radio (LoRa) communication is a widespread communication protocol that offers long range transmission and low data rates with minimum power consumption. In the context of solid waste management, only a low amount of data needs to be sent to the remote server. With this advantage, we proposed architecture for designing and developing a customized sensor node and gateway based on LoRa technology for realizing the filling level of the bins with minimal energy consumption. We evaluated the energy consumption of the proposed architecture by simulating it on the Framework for LoRa (FLoRa) simulation by varying distinct fundamental parameters of LoRa communication. This paper also provides the distinct evaluation metrics of the the long-range data rate, time on-air (ToA), LoRa sensitivity, link budget, and battery life of sensor node. Finally, the paper concludes with a real-time experimental setup, where we can receive the sensor data on the cloud server with a customized sensor node and gateway.


Author(s):  
Khaja Kamaluddin ◽  
Masood Shareef Arif ◽  
Imran Khan

In this paper, GPS based Bluetooth broadcasting for long range is proposed. System model for Long range broadcasting of messages with multiple piconets and dynamically created threshold devices, based on GPS information is presented. Our simulation results have shown that, message can be received by those devices which are out of the initial Bluetooth range in reasonable time. Flooding of multiple messages could be avoided by applying hash function. With this solution, long range data and voice communication could be done with free of cost also can be used for commercial advertising purpose.


2020 ◽  
Author(s):  
Botsi S. ◽  
Yang A. ◽  
Kumar S. ◽  
Pal S. B. ◽  
Lam M. ◽  
...  
Keyword(s):  

Author(s):  
Kiyoshy Nakamura ◽  
Pietro Manzoni ◽  
Marco Zennaro ◽  
Juan-Carlos Cano ◽  
Carlos T. Calafate
Keyword(s):  
Low Cost ◽  

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