Articles

PERANCANGAN DAN ANALISIS PERFORMANSI PRIVATE CLOUD COMPUTING UNTUK PENYIMPANAN DATA DI SMPN 1 KARIMUN Saputra, Muhammad Ridwan; Safrianti, Ery; Sari, Linna Oktaviana
Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains Vol 6 (2019): Edisi 2 Juli s/d Desember 2019
Publisher : Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains

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Abstract

The development of information technology has ampact on changes in human life. One of them is Cloud Computing technology. Cloud Computing is computing model that it giveaway saat toaccess services by offering resources suci as hardware, software, and data storage as user guidance services. SMPN 1 Karimun is one of the Junior High Schools in Karimun Regency,still uses conventional storage namely computer storage or tiger storages. So, the ampun of data cause a lack of effeciency and effectiveness in accessing data. As a technology like cloudcomputing. Cloud computing has function as a server for digital-based storage, renew using cloud computing can storage performance in SMPN 1 Karimun to knot it any attack of DoS ( Denial of Service ). The research methodology is to design a cloud computing system by testings function in the application with the quality of existing network. The average value of throughput without DoS attack is 21,21 Mbit/s, the average throughtput value two PCs using DoS attack is18,76 Mbit/s while four PCs is 17,21 Mbit/s. Avarage result of packet loss without DoS attack is 0,046 %, the average of packet loss value using two PCs DoS attack is 0,082 % while using fourPCs is 0,104 %. Average result of delay value without DoS attack is 0,000354 ms, the average delay value using two PCs is 0,000475 ms while using while four PCs is 0,000517 ms.Keywords: Cloud Computing, DoS (Denial of Service), QoS (Quality of Service), SMPN 1 Karimun
PENERAPAN CIELAB DAN CHAOS SEBAGAI CIPHER PADA APLIKASI KRIPTOGRAFI CITRA DIGITAL Sari, Linna Oktaviana
Jurnal Rekayasa Elektrika Vol 10, No 3 (2013)
Publisher : Universitas Syiah Kuala

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.17529/jre.v10i3.1014

Abstract

The development of Internet supports people to transmit information, such as text, images and other media quickly. However, digital images transmitted over the Internet are very vulnerable to attacks, for examples modification and duplication by unauthorized people. Therefore, cryptography as one of method for data security has been developed. This research proposed a combination of color structure CIELab and key randomization by logistic map from chaos as new cipher in digital image cryptographic applications. Cipher is applied to the encryption and decryption process. Implementation of new cipher in cryptographic digital images application was built with Matlab R2010a. Based on the research that has been done, it was found that combination CIELab and chaos can be applied as a new cipher on the encryption and decryption of digital images for cryptographic applications with processing time less than 1 second. Under possible maximum key range on RGB image by 5,2x 1033, the cipher was sufficiently secure against brute-force attack. Decrypted image has good quality with PSNR greater than 50 dB for digital image formatted in ?tiff? and ?png?.
Simulasi Antena Mikrostrip Patch Persegi Panjang Planar Array 6 Elemen Dengan Pencatuan Aperture Coupled Untuk Aplikasi CPE WiMAX Pada Frekuensi 3,3-3,4 GHz Gusma, Rezki Ananda; Sari, Linna Oktaviana
Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains Vol 1, No 2 (2014): Wisuda Oktober Tahun 2014
Publisher : Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains

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Abstract

WiMAX technology has high data transfer speed, large access range and mobility capability. To access the WiMAX network required Customer Premise Equipment (CPE). CPE require a little dimension antenna and integrated it easily. Therefore, microstrip antenna is a good candidate for this application.  This paper, discuss design of 6 elements planar array rectangular microstrip patch antenna that can be used for CPE WiMAX application in 3.3 GHz (3.3-3.4 GHz). Microstrip antenna is designed using Aperture Coupled technique to improve the bandwidth. The design and simulation of microstrip antenna require Ansoft HFFS v.13. The simulation results show that antenna can operates in 3.3-3.4 GHz frequency. The value of the impedance bandwidth is 203.5 MHz (3.2405 to 3.444 GHz) or 6.09 % at VSWR ≤ 1.5 and gain is 7.4358 dBi. Keywords: CPE WiMAX, Planar Array, Aperture Coupled, VSWR, Gain.
SISTEM OTOMATISASI PEMBERI PAKAN IKAN LELE BERBASIS ARDUINO UNO Feranita, Feranita; Firdaus, Firdaus; Safrianti, Ery; Sari, Linna Oktaviana; Fadilla, Aldy
JTEV (Jurnal Teknik Elektro dan Vokasional) Vol 5, No 1.1 (2019): Edisi khusus prosiding FORTEI 2019
Publisher : Universitas Negeri Padang

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Abstract

Otomatisasi pemberi pakan ikan lele berbasis arduino ini bertujuan untuk merancang bangun alat pemberi makan ikan lele secara otomatis berdasarkan jadwal makan dan berat ikan berbasis arduino uno.Alat Pemberi pakan ini menggunakan RTC untuk pengatur waktu dan pengatur jadwal pakan ikan dilengkapi juga dengan motor DC sebagai penebar pakan. Tegangan operasional alat yang digunakan rangkaian kontrol membutuhkan tegangan 5V dan 12V. Berat pakan yang dikeluarkan berdasarkan berat ikan lele dan banyaknya jumlah ikan. Jumlah anakan ikan lele dalam penelitian ini dibuat bervariasi, yaitu 750 ekor, 1500 ekor dan 3000 ekor dengan panjang anakan 7 sampai 8 cm per ekor. Jadwal pemberi pakan yang telah dijadwalkan yaitu pada pukul 09.00 WIB untuk pagi, pukul 16.00 WIB untuk pemberian pakan siang dan 21.00 WIB untuk pemberian pakan malam.Dari hasil pengujian, alat dapat bekerja dengan baik sesuai jadwal yang ditentukan dengan berat pakan yang keluar 150 gr selama 5,04 detik untuk anakan sebanyak 750 ekor, 300 gr selama 8,36 detik untuk anakan sebanyak 1500 ekor dan 600 gr untuk anakan sebanyak 3000 ekor.
Analisa Efisiensi Energi Algoritma Routing Low-Energy Adaptive Clustering Hierarchy (LEACH) Pada Wireless Sensor Network (WSN) Menggunakan MATLAB Sari, Linna Oktaviana
Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains Vol 1, No 2 (2014): Wisuda Oktober Tahun 2014
Publisher : Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains

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Abstract

Wireless sensor networks  (WSN)  consists of a large number of sensor nodes.  It has been pervasive in various applications including health care system, battlefield surveillance system, environment monitoring system and so on.  The main issues of WSN is about how to extend lifetime by reducing  power consumption of sensor nodes. Since  the most energy is used for transmitting and receiving packet, and replacing batteries as a main power source of sensor nodes are impossible due the location of sensor nodes that is hazardous, routing protocol become the best solution for minimize power consumption of sensor nodes. Many routing protocols have been proposed to increase lifetime of WSN. One of these protocols called LEACH (Low Energy Adaptive Clustering Hierarchy). LEACH is the first clustering based routing protocol, many researcher proposed new protocols and compared it’s performance with LEACH. So, we decided to analyze LEACH using MATLAB. We found that LEACH can be more effective  if more number of nodes in networks with the right number of cluster, more initial energy and if location of base station is near from the plan. Keywords : Wireless Sensor Networks, LEACH, Lifetime
PERANCANGAN DAN ANALISIS PERFORMANSI PRIVATE CLOUD COMPUTING UNTUK PENYIMPANAN DATA DI SMPN 1 KARIMUN Saputra, Muhammad Ridwan; Safrianti, Ery; Sari, Linna Oktaviana
Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains Vol 6 (2019): Edisi 2 Juli s/d Desember 2019
Publisher : Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains

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Abstract

The development of information technology has ampact on changes in human life. One of them is Cloud Computing technology. Cloud Computing is computing model that it giveaway saat to access services by offering resources suci as hardware, software, and data storage as user guidance services. SMPN 1 Karimun is one of the Junior High Schools in Karimun Regency, still uses conventional storage namely computer storage or tiger storages. So, the ampun of data cause a lack of effeciency and effectiveness in accessing data. As a technology like cloud computing. Cloud computing has function as a server for digital-based storage, renew using cloud computing can storage performance in SMPN 1 Karimun to knot it any attack of DoS ( Denial of Service ). The research methodology is to design a cloud computing system by testings function in the application with the quality of existing network. The average value of throughput without DoS attack is 21,21 Mbit/s, the average throughtput value two PCs using DoS attack is 18,76 Mbit/s while four PCs is 17,21 Mbit/s. Avarage result of packet loss without DoS attack is 0,046 %, the average of packet loss value using two PCs DoS attack is 0,082 % while using four PCs is 0,104 %. Average result of delay value without DoS attack is 0,000354 ms, the average delay value using two PCs is 0,000475 ms while using while four PCs is 0,000517 ms. Keywords: Cloud Computing, DoS (Denial of Service), QoS (Quality of Service), SMPN 1 Karimun
ANALISIS SISTEM KEAMANAN WIRELESS LOCAL AREA NETWORK (WLAN) PADA PROSES TETHERING Kurniawan, M. R.; Sari, Linna Oktaviana
Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains Vol 5 (2018): Edisi 2 Juli s/d Desember 2018
Publisher : Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains

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Abstract

Various types of technology facilities currently continue to develop in various ways, network security needs to be considered as the technology facilities develop. Tethering is a technology facility that is widely used today, such as in office areas, homes, boarding houses and campuses. In analyzing network security when using tethering as a media connection to the internet, testing and analysis are carried out when the test results are obtained. The testing techniques used are sniffing and scanning using inSSIDer home software, kismet, and aircrack-ng and airodump-ng tools. The results obtained from this test are that the inSSIDer and kismet software get open or encrypted security, then aircrak and airodump-ng can find the password used by Access Point (AP) tethering. From the tests carried out it can be concluded that the security of WLAN networks when using tethering is still categorized as not safe.Keyword: Wireless Local Area Network (WLAN), tethering, aircrack-ng, airodump-ng, inSSIDer, kismet.
PERAMALAN JUMLAH PENERIMAAN SISWA BARU DI SSEKOLAH DASAR DHARMMALOKA PEKANBARU DENGAN MENGGUNAKAN METODE EXPONENTIAL SMOOTHING Salim, Kelvin Rainey; Sari, Linna Oktaviana
Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains Vol 6 (2019): Edisi 2 Juli s/d Desember 2019
Publisher : Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains

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Abstract

To be able to make informed decisions regarding school policy, one of them is to determine the prediction of the number of students receiving on new academic school year. Prediction is one of the keys to success of decision making because the value of predictions of new students can be used as a reference to determine a decision. The Single Exponential Smoothing method is used to determine the predictions of student acceptance in the period of the next school year. Exponential Smoothing method is a fairly good forecasting method for long-term and medium-term forecasting. The main advantage of the Exponential Smoothing method is that it is seen from the ease of operation that is relatively low, there is little doubt whether better accuracy can always be achieved using (QS) Quantitative systems or deconposition methods that are intuitively interesting. Data to be processed is the number of student admissions for the period 1999/2000 to 2018/2019 and presented in the data for the academic year. The results obtained from this study are the results of analysis of a single exponential method to obtain information on predictions of new student admissions and the level of accuracy with MAPE.Keywords: prediction, forecasting, Single Exponential Smoothing, quantitatif.
ALGORITMA MONTE CARLO DALAM PENENTUAN DISTRIBUSI PENGGUNA JARINGAN DI KOTA PEKANBARU (STUDI KASUS : LTE MULTI-RAT GSM) Wulansari, Seprita; Sari, Linna Oktaviana
Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains Vol 6 (2019): Edisi 2 Juli s/d Desember 2019
Publisher : Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains

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Abstract

LTE as the top cellular technology at this time has become the reference standard for the success of a user to connect the network. LTE planning with the Multi-RAT access system can optimize the planning of the 700 MHz LTE spectrum in Pekanbaru in the future. Multi-RAT is a technology planning for two or more RAT networks with a shared access system that can improve network performance. Based on the results of network to tracking using Nperf Software, there are many blankspot areas existing condition of Pekanbaru at this time can be said that causes users can not access the cellular network. To validate the success of the users side that connected to the network, then a Monte Carlo algorithm simulation that is run using Radio Planning Atoll Software is needed. Monte Carlo simulation is a probability simulation that analyzes network capacity using a user distribution to test the reliability of network coverage based on a randomization process.The data generated from the Monte Carlo algorithm simulation is connected user persentation and the value of throughput obtained from multiplication of single user throughput with number of active customers. In simulation testing to resulted Multi-RAT connected user is 99.93% of users with a throughput average around 2.968,72 Mbps. On the other side non Multi-RAT connected user is 97.83% of users connected with throughput average obtained at 2,198.1 Mbps. So, it can be concluded that LTE network planning with Multi-RAT technology can be taken into considered for future LTE planning because it produce higher percentage of average value of connected users and throughput.Keywords: LTE, Multi-RAT, Monte Carlo Algorithm Simulation, Connected UserThroughput Value.
RANCANG BANGUN PEMANTAUAN PAKAN AYAM OTOMATIS BERBASIS INTERNET OF THINGS (IOT). Pradana, Zikri; Sari, Linna Oktaviana
Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains Vol 6 (2019): Edisi 2 Juli s/d Desember 2019
Publisher : Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains

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Internet of Things (IoT) has become a separate of field of research since the development of internet technology and other communication media. Internet of Things allows humans to communicate with all devices connected to the internet network. One of the implementation Internet of Things is chicken feed monitoring. In this research will using Loadcell sensor, NodeMCu as a microcontroller and servo motor as an automatic open and close controller. ESP8266 which is already embedded in NodeMCu as a WI-FI module is used to connecting arduino to the internet. The results obtained from this monitoring is if chicken feed is less than 1kg, the servo will open to fill the chicken feed container. Conversely, if the chicken feed is fully loaded 10kg, the servo will be closed again. Keyword: Android, Internet of Things (IoT), monitoring, automatic, chicken feed.