scholarly journals A Boltzmann Machine Optimizing Dynamic Routing for FANETs

Author(s):  
Xing WEI ◽  
WenTao HUANG ◽  
Hua YANG

Abstract Routing optimization for FANETs is a kind of NP-hard in the field of combinatorial optimization that describes simple and difficult to handle. The quality of routing has a direct impact on the network quality of FANETs, and the design of routing protocols becomes a very challenging topic in FANETs. In this paper, we study the characteristics of dynamic routing, combine the characteristics of FANETs themselves, use the energy of nodes, bandwidth, link stability, etc. as the metric of routing, and use Boltzmann machine for routing search to form an optimized dynamic routing protocol. The NS3 simulation simulator is used to compare and study with traditional MANET dynamic routing AODV and DSR, and the simulation results show that the routes obtained by using Boltzmann machine search are better than AODV and DSR in many aspects such as end-to-end average delay, average route survival time and control overhead.

2019 ◽  
Vol 9 (01) ◽  
pp. 47-54
Author(s):  
Rabbai San Arif ◽  
Yuli Fitrisia ◽  
Agus Urip Ari Wibowo

Voice over Internet Protocol (VoIP) is a telecommunications technology that is able to pass the communication service in Internet Protocol networks so as to allow communicating between users in an IP network. However VoIP technology still has weakness in the Quality of Service (QoS). VOPI weaknesses is affected by the selection of the physical servers used. In this research, VoIP is configured on Linux operating system with Asterisk as VoIP application server and integrated on a Raspberry Pi by using wired and wireless network as the transmission medium. Because of depletion of IPv4 capacity that can be used on the network, it needs to be applied to VoIP system using the IPv6 network protocol with supports devices. The test results by using a wired transmission medium that has obtained are the average delay is 117.851 ms, jitter is 5.796 ms, packet loss is 0.38%, throughput is 962.861 kbps, 8.33% of CPU usage and 59.33% of memory usage. The analysis shows that the wired transmission media is better than the wireless transmission media and wireless-wired.


2019 ◽  
Vol 3 (2) ◽  
pp. 106-119
Author(s):  
Moh Nailun Ni'am ◽  
Slamet Susanto

Abiu is one of plant origin from Latin America, but it has been adapted and developed in Indonesia. Fruit defects are one of the main problem that decrease the performance quality of abiu. Fruit bagging combine with pesticides are expected to overcome tthe problem. This research aims to study the effect of many kinds of pesticide active compounds to abiu performance quality. This research was conducted at Desa Babakan Lebak, Kecamatan Kota Bogor Barat, and Post-harvest Laboratory of Agronomy and Horticulture, Bogor Agricultural University. The experimental design used was Random Complete Block Design one factor, with 10 replications. This research was consisted of five treatments as a single factor, those were bagging + profenofos 500EC (P1); bagging + Mankozeb 80WP and Streptomicyn sulfat 20WP (P2); bagging + propinep 70WP (P3), bagging without pesticides (P4), and control (P5). Result of this research indicated that treatment of bagging in combination with pesticide active compounds has significant effect on fruit appereance, especially in the fruit smoothnes. The best treatment is the combination of bagging with the addition of mankozeb and streptomycin sulfate pesticide active compounds, which can improve fruit smoothness 26% better than control. The treatment of pesticide active compounds didn’t have significan effectt on the diameter, softness, weight, volume, TSS, TTA, and vitamine C variables.


2014 ◽  
Vol 989-994 ◽  
pp. 4265-4268
Author(s):  
Yang Zhou

With the technology improvement of computer communication and multimedia coding, real time communication such as audio and video is introduced to networks and become a dominant way of communication.In the control of network, the optimization problem of the network controller based on network Quality of service (QoS) is a very important problem in the research of network control. Considering the influence of network quality—of service (QoS) on the control performance,a system model combining the network parameters and the control parameters is established for networked control systems (NCSs). Based on this, the condition dependent on the network parameters and control parameters is presented for the existence of guaranteed cost controllers.LMI).Within the scope of QoS perturbation,the designed controller can not only make the system as hypnotically stable but also guarantee that the system performance index is not greater than the upper bound.


2014 ◽  
Vol 543-547 ◽  
pp. 2249-2254 ◽  
Author(s):  
Wei Wang ◽  
Dong Nian Cheng

The P2P technology consumes the largest proportion of network traffic and is usually encrypted, which is lack of supervision. Accurate and rapid identification of encrypted P2P traffic, represented by the famous Skype, is of great significance to improve the network quality of service and enhance security control. In this paper, a trends-aware protocol fingerprints model is proposed based on the statistical signatures of signaling interactions and content transfer phase of Skype. The proposed method can sense traffic trends by trends-aware weighting functions and identify Skype traffic with anomaly scores in real-time. Experimental results show that the precision and real-time performances of the proposed algorithm is better than several state-of-art encrypted traffic identification methods, such as the protocol fingerprints and C4.5 algorithm.


2017 ◽  
Vol 13 (4) ◽  
pp. 6101-6107
Author(s):  
Rathika. P.D ◽  
S. Sophia

Nowadays, Cognitive Radio Networks have been considered, investigated and planned in an energetic manner. But maximum works focused on separate areas like Allocation, Sensing and Sharing of Spectrum, etc.  In this paper, propose a HCRN with the subsequent characteristics of priority based scheduling based on centralized switching delay aware network and distributed broadcasting protocol to decrease collision and enhance scheduling. For developing Hybrid Cognitive Radio Networks (HCRN) lot of space is still available. The proposed HCRN is simulated and network quality of service is estimated in terms of packet delivery ratio, control overhead, throughput and broadcast delay.


Author(s):  
Y. Xiao ◽  
M. H. Yao ◽  
S. H. Tang ◽  
H. F. Liu ◽  
P. W. Xing ◽  
...  

Abstract. Aiming at the observation data of CORS multi-mode data quality and inspection in CORS station, based on the observation data of a CORS station in Guilin, Guangxi, the paper used TEQC and Anubis software to check the data quality from data utilization, cycle slip ratio and multipath. The results show that the three quality inspection indicators of Anubis software are better than TEQC software, which proves that Anubis' data quality inspection results are effective and reliable. On this basis, using Anubis drawing tools to perform quality inspection and visual analysis from satellite constellation, signal band and observation data itself, it shows that Anubis' visual content is more elaborate than TEQC, and users can more intuitively understand and control the data quality of CORS station.


2016 ◽  
Vol 8 (4) ◽  
pp. 1893-1898
Author(s):  
Vijay Vijay ◽  
R. P. S. Dalal ◽  
B. S. Beniwal ◽  
Hemant Saini

A field study was undertaken to extrapolate the impact of foliar application of potash and its spray schedule on yield and physical and chemical parameters of sweet orange cv. Jaffa at experimental orchard, Department of Horticulture, CCS Haryana Agricultural University, Hisar. The results revealed that foliar application of KNO₃ at both the doses (2 and 4%) was found significantly or marginally better than K₂SO₄ (1.5 and 3.0%) and control (water spray) in increasing the juice content. Peel content, peel thickness and rag content was found to be influenced significantly due to different treatments on K and its spray schedule. Minimum rag content (38.11%) was recorded with foliar application of KNO₃ at the rate of 4% and maximum with control. Ascorbic acid and acidity were found maximum with two foliar applications of KNO₃ at the rate of 4% in the last week of April and August. Foliar application of KNO₃ at the rate of 4% was found most effective in increasing yield of sweet orange over control and other K treatments. Spray of K in the last week of April, May and August was found superior in increasing yield closely followed by two sprays in the last week of April and August. The findings signify the importance of K spray in enhancing yield and quality of sweet orange under semi-arid north western conditions of India.


2010 ◽  
Vol 1 (1) ◽  
pp. 74
Author(s):  
Muhammad Yusuf

Performance financial evaluation became a primary indicator for management, especially a bank. This research evaluated asset and liability management of PT Bank X to describe its risk and return, by using financial ratios. The results found that performance ratios of PT Bank X decreasingly, where interest margin and net margin decreased to negative. This because of interest expenses and other operational expenses increased. Risk evaluation based on liquidity ratio were also decreasing in 2006 – 2007, because of the most assets of the bank became illiquid assest and default credits. On the other hand, this conditions became worse because of “Rush”, many of their customers took their money out from the bank on the same period. In 2008, bank has reduced their default credits succesively and made its liquiditiy better than previous year. Bad quality of credit management and control made the bank budgets their bad allowances for default credits higher and made bank’s capital risk higher too. Finally, all of bank’s capital was financed with their liabilities. The other hand, bank’s operating risk were recovered slowly, by organzation rationalization to reduce number of employees, as efficiency also. But this effort, indeed, made employee expenses increasing because management must pay golden-shake hand costs to employees. 


2019 ◽  
Vol 15 (3) ◽  
pp. 175
Author(s):  
Boo Ho Voon ◽  
Ai Kiat Teo ◽  
Joyce E.C. Voon

Students always need sincere and kind guidance from the teachers. Hence, a true customer orientation is instrumental in teaching English as it is always good to understand the students’ needs to improve their performance.  This paper addresses the requirement to understand the students’ needs and then teach accordingly to improve the quality of MUET report-writing. A class-room based experiment was done on 40 students in a government school. The students were briefed on the requirements for report writing in MUET. There were experimental and control groups in this study. This research found that the format-driven teaching (FBT) had significantly improved the writing performance of the MUET students. The results indicated that the overall mean score of the students before the FBT teaching stood at 18.50 (out of maximum 40.00), but the score significantly increased to 23.95 after the students were briefed and taught based on the format and requirements of the report-writing. The quality of their writings was much better than before. This research suggested the need of putting the interests of the students first in teaching. The students might have different needs such as not knowing the expectations of the examiners or teachers. Implications and direction for future research were also discussed.


Author(s):  
Russell L. Steere ◽  
Eric F. Erbe ◽  
J. Michael Moseley

We have designed and built an electronic device which compares the resistance of a defined area of vacuum evaporated material with a variable resistor. When the two resistances are matched, the device automatically disconnects the primary side of the substrate transformer and stops further evaporation.This approach to controlled evaporation in conjunction with the modified guns and evaporation source permits reliably reproducible multiple Pt shadow films from a single Pt wrapped carbon point source. The reproducibility from consecutive C point sources is also reliable. Furthermore, the device we have developed permits us to select a predetermined resistance so that low contrast high-resolution shadows, heavy high contrast shadows, or any grade in between can be selected at will. The reproducibility and quality of results are demonstrated in Figures 1-4 which represent evaporations at various settings of the variable resistor.


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