Development of a web browser based interface to assist numerical calculations

Along with the times, recently there have been found tool to facilitate human’s work. Electronics is one of technology to facilitate human’s work. One of human desire is being safe, so that people think to make a tool which can monitor the surrounding condition without being monitored with people’s own eyes. Public awareness of the underground water channels currently felt still very little so frequent floods. To avoid the flood disaster monitoring needs to be done to underground water channels.This tool is controlled via a web browser. for the components used in this monitoring system is the Raspberry Pi technology where the system can take pictures in real time with the help of Logitech C170 webcam camera. web browser and Raspberry Pi make everyone can control the devices around with using smartphone, laptop, computer and ipad. This research is expected to be able to help the users in knowing the blockage on water flow and monitored around in realtime.

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The applicability of asymptotic formulas for recovery of turbulence parameters from data of the lidar sensing. II. Results of the numerical calculations

Оптика атмосферы и океана ◽

10.15372/aoo20161113 ◽

2016 ◽

Keyword(s):

Numerical Calculations ◽

Asymptotic Formulas ◽

Lidar Sensing ◽

Turbulence Parameters

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The Feasibility of Numerical Calculations of Vias Using the Matrix-Penciled Moment Method

PIERS Online ◽

10.2529/piers090903222343 ◽

2010 ◽

Vol 6 (1) ◽

pp. 36-40 ◽

Cited By ~ 1

Author(s):

Hailiang Li ◽

Yu Tian ◽

Tong Ling

Keyword(s):

Moment Method ◽

Numerical Calculations ◽

The Matrix

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Pengembangan Sistem VOIP Menggunakan Server Issabel Versi 4.0 dan Tunnel EOIP pada OMNI Hospital Alam Sutera

Matrik Jurnal Manajemen Teknik Informatika dan Rekayasa Komputer ◽

10.30812/matrik.v18i1.330 ◽

2018 ◽

Vol 18 (1) ◽

pp. 13-20

Author(s):

Elly Mufida ◽

David Wardana Agus Rahayu

Keyword(s):

Operating System ◽

Open Source ◽

End Of Life ◽

Communication System ◽

Communication Protocol ◽

The Internet ◽

Migration Process ◽

Web Browser ◽

Backup Path ◽

E Mail

The VoIP communication system at OMNI Hospital Alam Sutera uses the Elastix 2.5 server with the Centos 5.11 operating system. Elastix 2.5 by the developer has been declared End of Life. The server security system is a serious concern considering that VoIP servers can be accessed from the internet. Iptables and fail2ban applications are applications that are used to limit and counteract those who try to attack the VoIP server. One application that can be used as an open source VoIP server is the Issabel Application version 4.0. The migration process from Elastix 2.5 application to Issabel 4.0 by backing up all configurations in the Elastix 2.5 application through a web browser including the configuration of endpoints, fax, e-mail, asterisk. After the backup file is downloaded then upload the backup file to the Issabel 4.0 application then run the migration process. Adding a backup path as a failover connection is needed because the VoIP communication protocol between the OMNI Hospitals Group still uses one path so that when there is a problem in the connection path, the communication protocol will stop. The tunnel EoIP is a protocol used as a backup path between the OMNI Hospitals Group site.

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IMPLEMENTASI QUICK RESPONSE (QR) CODE PADA APLIKASI VALIDASI DOKUMEN MENGGUNAKAN PERANCANGAN UNIFIED MODELLING LANGUAGE (UML)

ANTIVIRUS Jurnal Ilmiah Teknik Informatika ◽

10.30957/antivirus.v10i1.87 ◽

2016 ◽

Vol 10 (1) ◽

Author(s):

Novan Adi Musthofa, Siti Mutrofin, Mohamad Ali Murtadho

Keyword(s):

Qr Code ◽

Quick Response ◽

Uniform Resource Locator ◽

Modelling Language ◽

Web Browser ◽

Unified Modelling Language

Dengan berkembangnya teknologi informasi, sering sekali terjadi penyelewengan dokumen terutama pada dokumen-dokumen cetak. Dokumen merupakan salah satu data yang sangat penting, karena dokumen merupakan sumber informasi yang diperlukan oleh suatu instansi, organisasi, negara, maupun individu. Tanpa dokumen, maka seseorang akan kehilangan data-data yang diperlukan untuk kegiatan di masa yang akan datang. Pemalsuan dokumen sangat mudah dilakukan dengan cara meniru bentuk serta isi dari suatu dokumen. Penelitian sebelumnya pernah dilakukan, namun dalam objek yang berbeda. Pemalsuan dokumen dapat diatasi dengan menggunakan Quick Response (QR) Code. QR Code mampu menyimpan semua jenis data, seperti data angka/numerik, alphanumeric, biner, kanji/kana. Selain itu QR Code memiliki tampilan yang lebih kecil daripada barcode. Untuk dapat membuat QR Code suatu dokumen maka dibuatlah sebuah aplikasi yaitu aplikasi Validasi Dokumen. Aplikasi Validasi Dokumen dirancang dengan menggunakan metode waterfall serta menggunakan perancangan Unified Modelling Language (UML). Bahasa pemrograman yang digunakan yaitu bahasa pemrograman PHP: Hypertext Preprocessor (PHP) dengan database MySQL. Sebelum QR Code dibuat, terlebih dahulu data dokumen dienkripsi dan kemudian dijadikan QR Code. Hasil pemindaian QR Code berupa Uniform Resource Locator (URL) yang mengarah pada data dokumen. Ketika URL dijalankan pada web browser, sistem melakukan deskripsi pada URL, kemudian dicocokkan dengan database, dan selanjutnya ditampilkan ke web browser. Hasil akhir aplikasi Validasi Dokumen berupa QR Code yang digunakan untuk menyimpan URL yang menunjukkan bahwa dokumen memang benar-banar dokumen yang resmi (bukan ilegal) dari suatu instansi. Pada uji coba penelitian ini juga dilakukan perbandingan kinerja dengan 3 aplikasi yang sejenis, 3 aplikasi pembanding tersebut dipilih karena memiliki hasil visual QR Code yang hampir mirip, namun jika dilakukan scanning memiliki hasil yang berbeda, karena fiturnya juga berbeda. Berdasarkan hasil pengujian dengan 3 pembanding aplikasi yang sejenis, dengan menggunakan aplikasi yang diusulkan dalam penelitian ini, pemalsuan dokumen dapat dihindari dengan menggunakan aplikasi Validasi Dokumen selama tidak ada ikut campur orang dalam (superadmin/admin) dalam melakukan praktik pemalsuan dokumen. Pada penelitian selanjutnya dapat dilakukan perbaikan kelemahan aplikasi ini, yaitu agar tidak menampilkan URL, namun hasil pemindai QR Code, langsung dapat menampilkan detail isi dokumen.

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Normal form method in search for periodic solutions of ordinary differential equations. Case of the fourth order

Information and Control Systems ◽

10.31799/1684-8853-2018-6-24-34 ◽

2018 ◽

pp. 24-34

Author(s):

V. F. Edneral ◽

O. D. Timofeevskaya

Keyword(s):

Normal Form ◽

Differential Equations ◽

Ordinary Differential Equations ◽

Periodic Solutions ◽

Fourth Order ◽

Numerical Solutions ◽

Numerical Calculations ◽

Computational Time ◽

Resonant Normal Form ◽

Normal Form Method

Introduction:The method of resonant normal form is based on reducing a system of nonlinear ordinary differential equations to a simpler form, easier to explore. Moreover, for a number of autonomous nonlinear problems, it is possible to obtain explicit formulas which approximate numerical calculations of families of their periodic solutions. Replacing numerical calculations with their precalculated formulas leads to significant savings in computational time. Similar calculations were made earlier, but their accuracy was insufficient, and their complexity was very high.Purpose:Application of the resonant normal form method and a software package developed for these purposes to fourth-order systems in order to increase the calculation speed.Results:It has been shown that with the help of a single algorithm it is possible to study equations of high orders (4th and higher). Comparing the tabulation of the obtained formulas with the numerical solutions of the corresponding equations shows good quantitative agreement. Moreover, the speed of calculation by prepared approximating formulas is orders of magnitude greater than the numerical calculation speed. The obtained approximations can also be successfully applied to unstable solutions. For example, in the Henon — Heyles system, periodic solutions are surrounded by chaotic solutions and, when numerically integrated, the algorithms are often unstable on them.Practical relevance:The developed approach can be used in the simulation of physical and biological systems.

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Evaluasi Aksesibilitas Learning Object Berdasarkan Web Content Accessibility Guidelines 2.0

Jurnal ULTIMATICS ◽

10.31937/ti.v9i2.602 ◽

2017 ◽

Vol 9 (2) ◽

pp. 67-71

Author(s):

Herru Darmadi ◽

Yan Fi ◽

Hady Pranoto

Keyword(s):

Learning Objects ◽

Authoring Tool ◽

Learning Object ◽

Web Content ◽

Web Browser ◽

E Learning ◽

Index Terms ◽

Accessibility Guidelines ◽

Content Accessibility

Learning Object (LO) is a representation of interactive content that are used to enrich e-learning activities. The goals of this case study were to evaluate accessibility and compatibility factors from learning objects that were produced by using BINUS E-learning Authoring Tool. Data were compiled by using experiment to 30 learning objects by using stratified random sampling from seven faculties in undergraduate program. Data were analyzed using accessibility and compatibility tests based on Web Content Accessibility Guidelines 2.0 Level A. Results of the analysis for accessibility and compatibility tests of Learning Objects was 90% better than average. The result shows that learning objects is fully compatible with major web browser. This paper also presents five accessibility problems found during the test and provide recommendation to overcome the related problems. It can be concluded that the learning objects that were produced using BINUS E-learning Authoring Tool have a high compatibility, with minor accessibility problems. Learning objects with a good accessibility and compatibility will be beneficial to all learner with or without disabilities during their learning process. Index Terms—accessibility, compatibility, HTML, learning object, WCAG2.0, web

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