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Published by Institut Sains dan Teknologi AKPRIND

ISSN : 19798415 EISSN : - DOI : -

Chemical Engineering, Chemistry & Bioengineering Computer Science & IT Industrial & Manufacturing Engineering Materials Science & Nanotechnology Mechanical Engineering

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Articles 583 Documents

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TEKNIK WATERMARKING MENGGUNAKAN METODE CRT PADA DETEKSI TEPI CANNY UNTUK PERLINDUNGAN HAK CIPTA (DAGADU) Herawati, Nuniek
JURNAL TEKNOLOGI TECHNOSCIENTIA Technoscientia Vol 11 No 2 Februari 2019
Publisher : Lembaga Penelitian & Pengabdian Kepada Masyarakat (LPPM), IST AKPRIND Yogyakarta

Yogyakarta merupakan salah satu kota tujuan wisata favorit di Indonesia. Hampir setiap akhir pekan atau liburan Kota Gudeg ini selalu dipadati oleh wisatawan baik lokal maupun manca negara dari anak-anak, remaja sampai orang dewasa. Pada kota pariwisata khususnya, ketersediaan cinderamata dan oleh-oleh memegang peran penting untuk menambah income daerah dan sudah pasti mempunyai kekhasan. Kota Yogyakarta tak hanya terkenal dengan oleh-olehnya yang berupa gudeg, batik dan bakpia saja, namun juga dikenal dengan brand fashion Dagadu. Dagadu merupakan sebuah merek dagang khas Yogyakarta berupa rancangan grafis yang dibuat pada cinderamata terutama kaos, baju, gantungan kunci, stiker dan lain-lain. Rancangan grafis dimana menghasilkan citra bisa dijaga dari manipulasi citra agar tidak bisa ditiru oleh pihak lain. Skema watermarking dibuat untuk mengatasi hal ini. Teknik watermarking merupakan salah satu solusi menghindari penyalinan yang tidak legal. Saat ini banyak skema watermarking yang telah diajukan untuk mengatasi masalah ini. Tujuan dari penelitian ini adalah menerapkan teknik watermarking Chinese Remainder Theorem (CRT) untuk pelabelan hak cipta. Sebelum dilakukan penanaman watermark, dilakukan proses preprocessing terlebih dahulu menggunakan metode deteksi tepi Canny untuk mengetahui tepi dan batas-batas pada citra. Hasil pengukuran kualitas citra menggunakan Structural Similarity (SSIM), terlihat metode CRT pada deteksi tepi Canny mampu meningkatkan kualitas citra watermark secara signifikan dengan rata-rata 0.99963 dibandingkan dengan metode CRT yang hanya memiliki rata-rata 0.99842. Pada saat diberi serangan pengolahan citra, CRT pada deteksi tepi Canny mampu mempertahankan robustness terhadap serangan dengan rata-rata kompresi 0,68212 dan noise 0.940038 sedangkan metode CRT hanya memiliki rata-rata kompresi 0,56653 dan noise 0.93632.

PERBANDINGAN KUALITAS CITRA PADA TIGA SOFTWARE VIDEO -, Harmastuti; Setyowati, Dwi; Prasetyo, Panggih Cahyo; Widhiatmoko, Mahendra Kurnia
JURNAL TEKNOLOGI TECHNOSCIENTIA Technoscientia Vol 11 No 2 Februari 2019
Publisher : Lembaga Penelitian & Pengabdian Kepada Masyarakat (LPPM), IST AKPRIND Yogyakarta

The development of information technology is currently very rapid, can be seen in the real world how important the use of video, such as in the field of advertising, entertainment, business and no less important in the field of education for the delivery of learning information which all require a clear and attractive display. In this study, we will examine a comparison of three video software on image quality, image sharpness, brightness and audio effects in Windows Live Movie Maker, VideoSpin and Movavi Video. The research conducted made the video using the three software on the NTSC video format, AVI file type, resolution (720x480), 4:3 Pixel ratio, Standard D1 aspect ratio (0.09), 1500 kbps bit rate, 29.97fps frame rate with Audio: Stereo Channels, 48,000 HZ sample rate, 2.2 minutes duration. The samples were taken by the HMJ activities (HIMAKOM), namely graphic science competitions, sports, the introduction of new software training students, data used by static photos. For testing, questionnaires were collected on 43 respondents, students, majoring in Computer Systems and Statistics to assess the results of the video from the three video software and then tested with Anova to find out which one was better. From the results of the calculation of respondents' data, the average respondents liked the Movavi Video software with an image quality value of 89.2, sharpness of images 88.103, audio effects 83.333 and after being tested using Anova software Movavi Video analysis was better. It was concluded in this study that Movavi Video software could be a consideration to choose from in making videos.

RANCANG BANGUN SISTEM MONITORING SUHU DAN KELEMBABAN PADA RUANG SERVER BERBASIS IoT (INTERNET OF THINGS) Santoso, Gatot; Kristiyana, Samuel; Hani, Slamet; Mujahidin, Achmad Miradani
JURNAL TEKNOLOGI TECHNOSCIENTIA Technoscientia Vol 11 No 2 Februari 2019
Publisher : Lembaga Penelitian & Pengabdian Kepada Masyarakat (LPPM), IST AKPRIND Yogyakarta

Room server is a room that is used to store server computers and network devices. Room server is important assets for companies or institutions that implement information technology as a support in their daily activities. The importance of that is because in the server room there are applications and databases that store all important and valuable information for the company or institution concerned, therefore the server room must always be in good condition. Design of temperature and humidity monitoring systemsis designed to detect changes in temperature and humidity in the room using ESP8266 Node MCU as the main control, then use DHT 11 as a temperature and humidity detection sensor, then the data will be sent to the Telegram application already installed on the smartphone and displayed in the LCD. If the MQ-2 gas sensor detects a smoke greater than 500 ppm, the buzzer active. With this tool, it is expected to be able to monitor the real time room temperature and humidity in the server room so that it can reduce the damage to the hard drive or other damage.

PERKEMBANGAN LINGKUNGAN PENGENDAPAN DARI FORMASI SAMBIPITU KE FORMASI WONOSARI DAERAH JELOK, DESA BEJI, KECAMATAN PATOK, KABUPATEN GUNUNGKIDUL, DAERAH ISTIMEWA YOGYAKARTA Tania, Dina
JURNAL TEKNOLOGI TECHNOSCIENTIA Technoscientia Vol 11 No 2 Februari 2019
Publisher : Lembaga Penelitian & Pengabdian Kepada Masyarakat (LPPM), IST AKPRIND Yogyakarta

The research is investigating Middle Miocene to Pliocene geological stage of sediment depositional changing in Dusun Beji, Desa Jelok, Kecamatan Patuk, Kabupaten Gunung Kidul, Special Regionof Yogyakarta. Base on the measure section of cross-section analysis and bentonitic fossil analysis, the research area has three formations from old to young formation such as Sambipitu Formation, Oyo Formation, and Wonosari Formation. The result analyzed that microfossil show Sambipitu Formation deposition in the middle of the neritic zone and changedintothe deep neritic zone until lower bathyal in Oyo Formation, and it changes become more shallow in Wonosari Formation, which is depositions in the lower neritic zone to upper neritic zone as long Middle Miocene to Pliocene age. Sambipitu and Oyo Formation havedepositional changing from Lower Fan to Supra Fan Lobes on Mid Fan with lithology change form silt with bioturbation structure to pumice breccia, tuff, sandstone and claystone with slump structure, lamination and massive. In other depositional in Wonosari Formation have environment of Inner Ramp with clastic limestone dominated such as calsirusite and calcarenite.

KARAKTERISTIK MEKANIK KOMPOSIT SERAT CANTULA (AGAVE CANTULA ROXB) SEBAGAI ALTERNATIF BAHAN PENGUAT TERHADAP PARTISI RUMAH Wilaha, Lidi
JURNAL TEKNOLOGI TECHNOSCIENTIA Technoscientia Vol 11 No 2 Februari 2019
Publisher : Lembaga Penelitian & Pengabdian Kepada Masyarakat (LPPM), IST AKPRIND Yogyakarta

Using of natural fiber as ingredients of particle board products, still have to various studies to gain the character of the productâ€™s standard. Study of Cantula fiber utilization with matrix of Yukalac 157 BQTN-EX unsaturated polyester as the design of composite manufacturing partition (simplicity wall) of housing is professionally researched and potential, it's important to do immediately investigation potential of characteristic Cantulaâ€™s fiber as alternative composite material to partition housing. Cantula fiber that has been cleaned, then soaked with a solution of NaOH 10% for 4 hours, then recleaned back, and let it dry naturally in the room without stright sunlight for 3 days until moisture content ranged from 8-10%. The composite samples are made with combination method hand laying and press shape with the fractional volume of 10%, 20%, 30%, 40%, and 50%. For matrix and hardener, using the Polyester Yukalac Type 157 BQTN-EX and MEXPO, the formal press is made by steel. To tool test impact standard is JIS K-7113, the spesimen test use ASTM D-5941, with microphoto, and SEM cross analysis used to for failure or errors (broken) analysis. The results have overall due to the fiber volume fraction Cantula-polyester compound against mechanical characteristics is grow up experienced of toughness impact with consecutive average volume fraction 10%, 20%, 30%, 40% therefore 6831.5 J/M2, 7464.5 J/M2, 8549 J/M2 and 10151.5 J/M2. But on the fraction of the fiber volume 50% started to droppen the value until 9515 J/M2. The increasing of absorby energy is caused by adding of fiber to compound, therefore be able to increase traits of toughness or properties and reversal. The fracturing of test impact on composite Vf 10%, 20%, 30% are failure is due to the outcome of matric failure increasingly, but at Vf 40% has a strengthening of fiber that is marked with the broken fiber and matrix tend to be simultaneously. in Vf 50%. The failure of the dominant due to the composition of the matrix that is less, the reinforcement of apparent comes only from the fiber, like sawn by the cross-section, that shows the debt phenomenon of the as much as number of fibre pulled out.

Jurnal Technoscientia Vol 11 No 2 Februari 2019-Cover-Redaksi-Daftar Isi Technoscientia, Jurnal Teknologi
JURNAL TEKNOLOGI TECHNOSCIENTIA Technoscientia Vol 11 No 2 Februari 2019
Publisher : Lembaga Penelitian & Pengabdian Kepada Masyarakat (LPPM), IST AKPRIND Yogyakarta

Jurnal Technoscientia Vol 11 No 2 Februari 2019-Full Paper Technoscientia, Jurnal Teknologi
JURNAL TEKNOLOGI TECHNOSCIENTIA Technoscientia Vol 11 No 2 Februari 2019
Publisher : Lembaga Penelitian & Pengabdian Kepada Masyarakat (LPPM), IST AKPRIND Yogyakarta

PENENTUAN WAKTU OPERASIONAL UPS PADA SISTEM CATU DAYA OTOMATIS TRANSISI PLN-GENSET Pambudi, Prastyono Eko; Duniawan, Agus; Fahmi, Samsuhadi
JURNAL TEKNOLOGI TECHNOSCIENTIA Technoscientia Vol 12 No 1 Agustus 2019
Publisher : Lembaga Penelitian & Pengabdian Kepada Masyarakat (LPPM), IST AKPRIND Yogyakarta

PLN main source of power supply from PLN is very influential on electricity supply for the community. Electrical energy from PLN sometimes often occur blackouts. The need for reliable power supply is indispensable to residential consumers, especially in home industries. From these problems, this research is conducted to realize the control system used to transition the power supply with the main power supply from PLN and backup power supply from Uninterruptible power supply (UPS) and Genset. This study produces an automatic power supply transition which has two backup power supplies in the form of UPS and Genset. From the analysis of residential houses that have PLN 450 VA subscription, the system will work with a 12 Volt UPS battery at a current capacity of 28,125 A, and a capacity of Genset 800 VA. The automatic power supply transition system will instruct the UPS power supply to be connected when the PLN main supply is disconnected, after a UPS battery low will command the Genset for the starter, and when the generator is in stable condition the power supply will switch to the power supply Genset. At the time of PLN power supply source again available load will be transferred system to PLN source.

ANALISIS DISTRIBUSI NANOPARTIKEL Fe3O4 TERHADAP PENYERAPAN LOGAM BERAT Pb Sartika, Dewi; Malis, Eko; Mangunang, Emmistasega Subama
JURNAL TEKNOLOGI TECHNOSCIENTIA Technoscientia Vol 12 No 1 Agustus 2019
Publisher : Lembaga Penelitian & Pengabdian Kepada Masyarakat (LPPM), IST AKPRIND Yogyakarta

Magnetic nanomaterial Fe3O4 has pabricated using coprecipitation methods for 90 minutes with temperatur 60oC . Pabrication product of this sample were coloured black powder. Characterisation of Fe3O4 used Transmission Electron Microscopy (TEM). Characterization result studied were density using J-image software. Mixing Fe3O4 powder into liquid waste has goal to determine the level of absorption of Fe3O4 magnetic nanomaterials to heavy metals contained in waste. Particle density has a big potential to absorb heavy metals, especially Pb. At the density level of the densest Fe3O4 particles shows the optimal absorption ability of Pb metal absorbed at a concentration of 0,56 grams with an absorption percentage of 99,99%.

PEMBUATAN SERBUK PEWARNA ALAMI TEKSTIL DARI EKSTRAK DAUN JATI (TECTONA GRANDIS LINN. F.) Yuniwati, Murni; Andaka, Ganjar; Dofianti, Hanyfa; Prawitasari, Harnanda
JURNAL TEKNOLOGI TECHNOSCIENTIA Technoscientia Vol 12 No 1 Agustus 2019
Publisher : Lembaga Penelitian & Pengabdian Kepada Masyarakat (LPPM), IST AKPRIND Yogyakarta

Anthocyanin is a dye that plays a role in providing a brownish red color that has the potential to become a natural dye for food and can be used as an alternative substitute for coloring dyes that are safer for health. Textile dyes are divided into two, namely natural dyes and synthesis dyes. Natural dyes come from animals and plants while synthetic dyes can be produced from chemicals Anthocyanins are widely found in plants with striking colors, one of which is teak leaves. Teak leaves are one part of the teak tree which can be used as a source of natural dyes for textiles by extracting the leaves. This research was conducted to obtain color powder from extracts of dyes from fresh teak leaves using the foam-mat drying method. This study was prepared to study the effect of citric acid addition on color intensity and the addition of chicken egg white to moisture content and solubility of color powder of teak leaf extract. To achieve this goal, in this study used fresh teak leaves with 95% ethanol solvent mass. At the beginning of the process, 25 grams of teak leaves are mashed first, then put into a beaker glass and macerated using a 95% ethanol mass of 250 ml and added 10 ml of citric acid from the amount of solvent with a concentration varied for 24 hours. After that filtered, the filter was taken. Powder making was carried out by foam-mat drying method using chicken egg white as foaming and maltodextrin as filler. The filtrate was added with 8% b/v maltodextrin and chicken egg white with the concentration varied stirred in the mixer until homogeneous. Then the oven is dried at a temperature of 60oC until a constant weight is reached. Using 25 grams of fresh teak leaves, 95% ethanol solvent as much as 250 ml, and 8% b/v maltodextrin obtained optimal conditions at 5% b/v egg white concentration and 30% b/v citric acid concentration, with these conditions obtained the powder results with a moisture content of 8% mass, solubility of 99.22% b/v with a reddish level of 16,625, a brightness level of 43,495, and a yellowish level of 5,925. It is hoped that this research can be used as a reference for the development of further research on anthocyanin dye powder which will then be developed as a raw material for dyes for the chemical industry, and textile industry.

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