scholarly journals Proportional-integral genetic algorithm controller for stability of TCP network

Author(s):  
Mohammed Qasim Sulttan ◽  
Manal Hadi Jaber ◽  
Salam Waley Shneen

The life development and increase the number of internet users imposed an increase in data circulating on the internet network and then make the network more congestion. As a result of all this, some problems arose such as time delay in packets delivery, loss of packets, and exceed the buffer capacity for the middle routers. To overcome those problems, transmission control protocol and active queue management (TCP/AQM) have been used. AQM is the main approach used to control congestion and overcome those problems to improve network performance. This work proposes to use the proportional-integral (PI) controller with a genetic algorithm (GA) as an active queue manager for routers of the Internet. The simulation results show a good performance for managing the congestion with using proportional-integral genetic algorithm (GA-PI) controller better than the PI controller.

2020 ◽  
Vol 2 (2) ◽  
pp. 61-66
Author(s):  
Yulia Dwi Noviani

Along with the development of technology, especially computers and the internet, we can get information more easily. This also encourages the number of computer and internet users to grow. Especially in the SMK ASY-SYARIFIY IBS PANDANWANGI, the number of students and employees who use the internet is increasing from time to time. The increase in users using the network will cause the existing network infrastructure to be further improved so as not to disappoint users due to decreased network performance. VLAN is a technology that allows a LAN to be divided into several different domains. VLANs also allow the joining of networks that are separate locations, but seem to be located in the same domain. Research on the use of VLANs in the laboratory environment of SMK ASY-SYARIFY IBS PANDANWANGI provides results that VLAN is can improve network performance, share networks based on certain conditions, simplify management, minimize costs, and apply security methods.


This work described in the paper to show the implementation of Proportional Integral (PI) controller, Genetic algorithm based PI (GAPI), and Particle swarm optimization based PI (PSO-PI) for a Quarter Car System. The trip comfort is developed by means of the decrease of the body acceleration caused by the car body, due to the smoothness of the road. This paper tells about the model and controllers used in the study and discuss the vehicle response results. In the conclusion, a comparison of PI, GA-PI, and PSO-PI is shown using MATLAB simulations.


2018 ◽  
Vol 1 (2) ◽  
pp. 55
Author(s):  
Ahmad Tantoni ◽  
Mohammad Taufan Asri Zaen ◽  
Sofiansyah Fadli

Routers have important functions in the network, especially the internet. Routers can connect several network segments so that they can communicate with other users even though they are separated by a great distance (Sofana, 2013). IPv4 was originally a 32-bit binary number that was used to identify hosts on the network, after successful use by internet users then a new problem arises where IPv4 cannot accommodate Internet users in the future because it runs out of IPv4 addresses. Then IPv6 was created with the aim to provide more addressing than IPv4 (Sugeng, 2015). The problem is seen from the difference in the bit width between IPv4 and IPv6 whether it affects the CPU performance of the computer and the performance of data sent, average speed on the network. Then there will be research on the comparative performance of the CPU load and the performance of the data sent, the average speed of the computer network on the implementation of IPv4 and IPv6 using Passmark Advance Network Test. So that it can provide an overview of the results of the comparison of IPv4 and IPv6 QoS that are better than the 3 parameters tested with TCP and UDP protocols


2012 ◽  
Author(s):  
Ammar Hussam Yousif Yacoub ◽  
Salinda Buyamin ◽  
Norhaliza Abdul Wahab

Kertas ini membincangkan tentang aplikasi teknik pencarian stochastic yang dikenali sebagai Simulated Annealing bagi mengatasi masalah menala (tuning) alat pengawal Proportional plus Integral (PI) bagi pengawalan takat cecair di dalam sistem tangki berkembar. Setelah penerangan tentang prinsipal asas kepada Simulated Annealing diberikan, kertas ini mencadangkan tentang pencarian penyelesaian yang optimal bagi alat kawalan PI dengan mengoptimumkan prestasi indek, ITAE. Keberkesanan menggunakan kaedah Simulated Annealing telah dibandingkan dengan satu lagi kaedah iaitu Genetic Algorithm. Perbandingan adalah berdasarkan prestasi time response. Hasil keputusan menunjukkan perbandingan antara kaedah Simulated Annealing dan Genetic Algorithm. Kaedah yang di cadangkan tidak bergantung kepada tahap sesuatu sistem dan berupaya untuk menala walaupun tanpa diketahui parameter sesuatu proses . Di samping itu, kaedah yang di cadangkan tidak memerlukan sistem tersebut dimodelkan dalam bentuk matematik dan keseluruhan keputusan menunjukkan Simulated Annealing menghasilkan keputusan yang lebih baik dari Genetik Algorithm. Oleh itu, Simulated Annealing bolehlah dicadangkan sebagai salah satu cara bagi mengoptimumkan alat kawalan PI. Kata kunci: Penalaan proportional integral tuning; imulated annealing; genetic algorithm This paper introduces the application of a stochastic search technique, known as Simulated Annealing to the problem of tuning the proportional–integral controller for a linearized coupled tank liquid level control. After describing the basic principles of the Simulated Annealing, the proposed method concentrates on finding the optimal solution of PI controller by optimizing the performance index, the Integral Time Absolute Error, ITAE. The efficiency of Simulated Annealing algorithm for tuning the controller is compared with an evolutionary method, Genetic Algorithm. The comparison is based on the time response performance. The results shows the effectiveness and the capability of the SA to tune the proportional–integral (PI) controller for the coupled tank liquid level control. The proposed method does not depend on the system order and has the ability to tune the controller even there is unknown process parameters. In addition, the technique avoids the requirement for mathematical modeling of the system and the overall results have shown that SA yields better performance as compared to GA, hence, it is recommended for an alternative for optimizing the PI controller. Key words: Proportional integral tuning; simulated annealing; genetic algorithm


Crisis ◽  
2013 ◽  
Vol 34 (5) ◽  
pp. 348-353 ◽  
Author(s):  
Hajime Sueki

Background: Previous studies have shown that suicide-related Internet use can have both negative and positive psychological effects. Aims: This study examined the effect of suicide-related Internet use on users’ suicidal ideation, depression/anxiety tendency, and loneliness. Method: A two-wave panel study of 850 Internet users was conducted via the Internet. Results: Suicide-related Internet use (e.g., browsing websites about suicide methods) had negative effects on suicidal ideation and depression/anxiety tendency. No forms of suicide-related Internet use, even those that would generally be considered positive, were found to decrease users’ suicidal ideation. In addition, our results suggest that the greater the suicidal ideation and feelings of depression and loneliness of Internet users, the more they used the Internet. Conclusion: Since suicide-related Internet use can adversely influence the mental health of young adults, it is necessary to take measures to reduce their exposure to such information.


ADALAH ◽  
2020 ◽  
Vol 4 (2) ◽  
Author(s):  
Munadhil Abdul Muqsith

Abstract:The internet developed for the first time in Indonesia in the early 1990s. Starting from the pagayuban network, it is now expanding without boundaries anywhere. A survey conducted by the Indonesian Internet Service Providers Association (APJII) said that the number of internet users in Indonesia in 2012 reached 63 million people or 24.23 percent of the country's total population. Next year, that figure is predicted to increase by close to 30 percent to 82 million users and continue to grow to 107 million in 2014 and 139 million or 50 percent of the total population in 2015. million people. This matter also results in political communication with the internet media, or is often said to be cyber politics. Cyber politics in Indonesia has faced growth in recent years. There are many facilities that support the growth of cyber politics, such as Facebook, Twitter, mailing list, YouTube, and others.Keywords: Cyberpolitik, Internet  Abstrak:Internet berkembang pertama kali di Indonesia pada awal tahun 1990-an. Diawali dari pagayuban network kini berkembang luas tanpa batas dimanapun juga. Suatu survei yang diselenggarakan Asosiasi Penyelenggara Jasa Internet Indonesia (APJII) mengatakan kalau jumlah pengguna internet di Indonesia tahun 2012 menggapai 63 juta orang ataupun 24,23 persen dari total populasi negeri ini. Tahun depan, angka itu diprediksi naik dekat 30 persen jadi 82 juta pengguna serta terus berkembang jadi 107 juta pada 2014 serta 139 juta ataupun 50 persen total populasi pada 2015. juta orang. Perihal ini pula berakibat pada komunikasi politik dengan media internet, ataupun kerap diucap dengan cyber politic. Cyber politic di Indonesia hadapi pertumbuhan sebagian tahun terakhir. Banyaknya fasilitas yang menunjang pertumbuhan cyber politic semacam terdapatnya facebook, Twitter, mailing list, youtobe, serta lain-lain.Kata Kunci: Cyberpolitik, Internet 


Think India ◽  
2019 ◽  
Vol 22 (2) ◽  
pp. 315-328
Author(s):  
Vishal Patel ◽  
Pravin H. Bhathawala

Anti Virus are nasty software’s. It is designed to damage computer systems without the knowledge of the owner using the system and technique advancements are posing big challenges for researchers in both academia and the industry. The purpose of this study is to examine the available literatures on Anti Virus analysis and to determine how research has evolved and advanced in terms of quantity, content and publication outlets. Most Anti Virus programs are large and complex and one can’t possibly understand every detail. Educating the internet users about Anti Virus attack, as well as the implementation and proper application of anti-Anti Virus tools, are critical steps in protecting the identities of online consumers against Anti Virus attacks.


2019 ◽  
Author(s):  
Dijana Kovacevic ◽  
Ljiljana Kascelan

<p> </p> <p>the present study deals with a more detailed, and updated, modified model that allows for the identification of internet usage patterns by gender. The model was modified due to the development of the internet and new access models, on the one hand, and to the fact that previous studies mainly focuses on various individual (non-interactive) influences of certain factors, on the other.</p> <i></i><u></u><sub></sub><sup></sup> <p>The Decision Tree (DT) method, which is used in our study, does not require a pre-defined underlying relationship. In addition, the method allows a great many explanatory variables to be processed and the most important variables are easy to identify. </p><p>Obtained results can serve as to web developers and designers, since by indicating the differences between male and female internet users in terms of their behaviour on the internet it can help in deciding when, where and how to address and appeal to which section of the user base. It is especially important to know their online preferences in order to enable the adequate and targeted placement of information, actions or products and services for the intended target groups.</p><p> <b></b><i></i><u></u><sub></sub><sup></sup><br></p>


2016 ◽  
Vol 3 (1) ◽  
Author(s):  
Mike Francoeur

There is a tendency, particularly among Western pundits and technologists, to examine the Internet in almost universally positive terms; this is most evident in any discussion of the medium’s capacity for democratization. While the Internet has produced many great things for society in terms of cultural and economic production, some consideration must be given to the implications that such a revolutionary medium holds for the public sphere. By creating a communicative space that essentially grants everyone his or her own microphone, the Internet is fragmenting public discourse due to the proliferation of opinions and messages and the removal of traditional gatekeepers of information. More significantly, because of the structural qualities of the Internet, users no longer have to expose themselves to opinions and viewpoints that fall outside their own preconceived notions. This limits the robustness of the public sphere by limiting the healthy debate that can only occur when exposed to multiple viewpoints. Ultimately, the Internet is not going anywhere, so it is important to equip the public with the tools and knowledge to be able to navigate the digital space. 


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