Low-Energy Expansion of the Scattering Amplitude for Long-Range Quadrupole Potentials

1964 ◽  
Vol 134 (5A) ◽  
pp. A1188-A1197 ◽  
Author(s):  
Thomas F. O'Malley
Keyword(s):  
Long Range ◽  
Scattering Amplitude ◽  
Low Energy ◽  
Energy Expansion

scholarly journals A Long-Distance Communication Architecture for Medical Devices Based on LoRaWAN Protocol

Electronics ◽  
2021 ◽  
Vol 10 (8) ◽  
pp. 940
Author(s):  
Nicoleta Cristina Gaitan
Keyword(s):  
Energy Consumption ◽  
Long Range ◽  
Medical Devices ◽  
Low Energy ◽  
Area Network ◽  
Wide Area Network ◽  
Long Distance ◽  
Communication Architecture ◽  
Low Energy Consumption ◽  
Distance Communication

Recent market studies show that the market for remote monitoring devices of different medical parameters will grow exponentially. Globally, more than 4 million individuals will be monitored remotely from the perspective of different health parameters by 2023. Of particular importance is the way of remote transmission of the information acquired from the medical sensors. At this time, there are several methods such as Bluetooth, WI-FI, or other wireless communication interfaces. Recently, the communication based on LoRa (Long Range) technology has had an explosive development that allows the transmission of information over long distances with low energy consumption. The implementation of the IoT (Internet of Things) applications using LoRa devices based on open Long Range Wide-Area Network (LoRaWAN) protocol for long distances with low energy consumption can also be used in the medical field. Therefore, in this paper, we proposed and developed a long-distance communication architecture for medical devices based on the LoRaWAN protocol that allows data communications over a distance of more than 10 km.

Rational polynomial approximants and scattering amplitude for long range potentials

1976 ◽  
Vol 277 (1) ◽  
pp. 1-7 ◽  
Author(s):  
O. D. Corbella ◽  
C. R. Garibotti ◽  
F. F. Grinstein
Keyword(s):  
Long Range ◽  
Scattering Amplitude ◽  
Rational Polynomial

Field Study of Low-Energy Long-Distance Wireless Communication for IoT Application in Remote Areas

Mekatronika ◽  
2020 ◽  
Vol 2 (1) ◽  
pp. 52-62
Author(s):  
Kwai Yang Sak ◽  
Ahmad Najmuddin Ibrahim
Keyword(s):  
Radio Frequency ◽  
Long Range ◽  
Essential Element ◽  
Low Energy ◽  
Line Of Sight ◽  
Area Network ◽  
Structural Elements ◽  
Wide Area Network ◽  
Residential Areas ◽  
Long Distance

Long Range (LoRa) is a wireless radio frequency technology under the Low Power Wide Area Network (LPWAN). LoRa is able to communicate long range and low energy consumption. The communication range has become an essential element in the wireless radio frequency technology in the Internet of Things (IoT). The presence of LoRa is able IoT application performs in long communication distances with high noise sensitivity ability. People can operate, monitor, and do a variety of tasks from a remote distance. Therefore, this research aims to evaluate the performance of the LoRa connection between radio transceivers in remote locations. The different environment and structural elements affect the LoRa performance. This thesis will be supported by the experiment that LoRa communication in different environments and tests. This experiment tests in line of sight (LOS) and non-line of sight (NLOS). Two sets of LoRa parameters, including Spreading Factor (SF), Bandwidth, and coding rate, are tested in different environments. The experiment tests the LoRa performance in various aspects: received signal strength indicator (RSSI) and packet received ratio (PPR) at different coverage ranges. In addition, the LoRa performance is evaluated in university, residential areas and vegetation areas under similar temperature, weather, and time. The LoRa coverage distance in the vegetation area and university area is reached 900 meters in the LOS test. Still, the vegetation area's signal is more stable and able to receive weaker RSSI signals. The LoRa coverage distance in the NLOS test is shorter compared to the LOS test. NLOS test has only one-third of the LOS LoRa communication distance. It is due to the signal penetration on structural elements such as buildings and woods cause the signal power loss and only transmitting a shorter distance. The LoRa parameter with SF9, 31.25kHz bandwidth and 4/8 coding rate has a better coverage range and stable connection.

scholarly journals Low-energy expansion of the pion-nucleon Lagrangian

1996 ◽  
Vol 365 (1-4) ◽  
pp. 312-318 ◽  
Author(s):  
G. Ecker ◽  
M. Mojžiš
Keyword(s):  
Low Energy ◽  
Pion Nucleon ◽  
Energy Expansion

Low-energy scattering by long-range singular potentials

1968 ◽  
Vol 55 (3) ◽  
pp. 453-471 ◽  
Author(s):  
R. A. Handelsman ◽  
Young-Ping Pao ◽  
J. S. Lew
Keyword(s):  
Long Range ◽  
Low Energy ◽  
Singular Potentials ◽  
Energy Scattering

Low-energy expansion of the radiative pion decay amplitude

1980 ◽  
Vol 27 (10) ◽  
pp. 318-320
Author(s):  
A -M. M. Abdel-Rahmax
Keyword(s):  
Decay Amplitude ◽  
Low Energy ◽  
Pion Decay ◽  
Energy Expansion
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