Articles
18 Documents
Search results for
, issue
"Vol 10, No 2 (2018): November"
:
18 Documents
clear
<![CDATA[Remote Camera For Android Based Smartphones Installed On The Syma X8HG Drone ]]>
<![CDATA[Hero Wintolo]]>;
<![CDATA[Sudaryanto Sudaryanto]]>;
<![CDATA[Christoporus Galih Pramudito]]>
<![CDATA[ Angkasa: Jurnal Ilmiah Bidang Teknologi Vol 10, No 2 (2018): November ]]>
Publisher : <![CDATA[Institut Teknologi Dirgantara Adisutjipto ]]>
Show Abstract
|
Download Original
|
Original Source
|
Check in Google Scholar
|
Full PDF (3621.692 KB)
|
DOI: 10.28989/angkasa.v10i2.349
<![CDATA[The camera on the smartphone was basically to take pictures or video with equivalent quality digital camera or video recorder. The camera on the smartphone lies in two different locations, first place the rear side and the second being in front. Drone Syma x8hg who used to fly a smartphone for the shooting process is controlled from the laptop software, maximum range 80 meters from the drones by remote control. Software on Android devices and laptops must first diinstalisasi so both devices can be connected to the web server of the provider to process images from a drone Syma x8hg, the two devices must have a network connection provider respectively. Results from testing the smartphone camera carried by a flying drone can be controlled for filming with the distance is affected by the strength of the signal from the service provider's internet connection, while the height is limited by the strength of the signal between the drone with remote control.]]>
<![CDATA[3D MODELLING OF ANDESITE USING RESISTIVITY DATA IN KALISONGGO MOUNT, KULON PROGO ]]>
<![CDATA[Obrin Trianda]]>;
<![CDATA[Rizqi Prastowo]]>
<![CDATA[ Angkasa: Jurnal Ilmiah Bidang Teknologi Vol 10, No 2 (2018): November ]]>
Publisher : <![CDATA[Institut Teknologi Dirgantara Adisutjipto ]]>
Show Abstract
|
Download Original
|
Original Source
|
Check in Google Scholar
|
Full PDF (2104.263 KB)
|
DOI: 10.28989/angkasa.v10i2.279
<![CDATA[The needs for andesite stone for development in Kulon Progo is increasing, so a new andesite reserve is needed. This study aims to map andesit distribution in 2-D or 3-D in the research area. The determination of andesite distribution is based on the difference between the andesite resistivity value and the surrounding rocks. Geologically, Mount Kalisonggo and Songgo River are included in the Old Andesite Formation with the appearance of the colummnar joint structure.Field data was collected using a Geolistrik method with dipole-dipole configuration of 5 paths. The resistivity data is processed and modeled 2D using Res2Dinv software, so that the andesite resistivity cross-section model is obtained. Andesite distribution after the 2-D or 3-D modeling obtained thickness varies between 5-17 meters.]]>
<![CDATA[LUMPY DEMAND FORECASTING USING LINEAR EXPONENTIAL SMOOTHING, ARTIFICIAL NEURAL NETWORK, AND BOOTSTRAP ]]>
<![CDATA[Sinta Rahmawidya Sulistyo]]>;
<![CDATA[Alvian Jonathan Sutrisno]]>
<![CDATA[ Angkasa: Jurnal Ilmiah Bidang Teknologi Vol 10, No 2 (2018): November ]]>
Publisher : <![CDATA[Institut Teknologi Dirgantara Adisutjipto ]]>
Show Abstract
|
Download Original
|
Original Source
|
Check in Google Scholar
|
Full PDF (2105.33 KB)
|
DOI: 10.28989/angkasa.v10i2.362
<![CDATA[Lumpy demand represents the circumstances when a demand for an item has a large proportion of periods having zero demand. This certain situation makes the time series methods might become inappropriate due to the model’s inability to capture the demand pattern. This research aims to compare several forecasting methods for lumpy demand that is represented by the demand of spare part. Three forecasting methods are chosen; Linear Exponential Smoothing (LES), Artificial Neural Network (ANN), and Bootstrap. The Mean Absolute Scaled Error (MASE) is used to measure the forecast performance. In order to gain more understanding on the effect of the forecasting method on spare parts inventory management, inventory simulation using oil and gas company’s data is then conducted. Two inventory parameters; average inventory and service level; are used to measure the performance. The result shows that ANN is found to be the best method for spare part forecasting with MASE of 0,761. From the inventory simulation, the appropriate forecasting method on spare parts inventory management is able to reduce average inventory by 11,9% and increase service level by 10,7%. This result justifies that selecting the appropriate forecasting method is one of the ways to achieve spare part inventory management’s goal.]]>
<![CDATA[PENGARUH KUALITAS SISTEM TERHADAP KEPUASAN PENGGUNA SISTEM KRS ON-LINE UNIVERSITAS AMIKOM YOGYAKARTA DENGAN KUALITAS INFORMASI DAN KEGUNAAN SEBAGAI MEDIATING VARIABEL ]]>
<![CDATA[Ruhamah Uma Uma]]>
<![CDATA[ Angkasa: Jurnal Ilmiah Bidang Teknologi Vol 10, No 2 (2018): November ]]>
Publisher : <![CDATA[Institut Teknologi Dirgantara Adisutjipto ]]>
Show Abstract
|
Download Original
|
Original Source
|
Check in Google Scholar
|
Full PDF (3386.482 KB)
|
DOI: 10.28989/angkasa.v10i2.311
<![CDATA[Sistem Informasi KRS On-line Universitas AMIKOM Yogyakarta merupakan sistem informasi akademis penunjang operasional layanan kemahasiswaan khususnya yang berhubungan dengan KRS, KHS dan transkip nilai mahasiswa.Penelitian ini dilakukan dengan menganalisis hasil kuesioner dari 100 responden dan instrumen yang digunakan adalah kuesioner dengan skala likert 5. Metode analisis data yang digunakan Structural Equation Model (SEM) dengan menggunakan software Amos 21 Penelitian ini bertujuan untuk mengukur tingkat kepuasaan mahasiswa sebagai pengguna sistem informasi KRS On-line dengan mengkaji faktor kualitas sistem, kualitas informasi, kegunaan yang dirasakan dan kepuasan mahasiswa, serta menggunakan variabel kualitas informasi dan kegunaan yang dirasakan sebagai variabel mediasi atau mediating variabel. Hasil analisis menunjukkan bahwa kualitas sistem tidak memiliki pengaruh signifikan terhadap kepuasaan pengguna dengan nilai p = 0.659. sementara kualitas sistem memiliki pengaruh signifikan terhadap kualitas informasi dengan nilai p = 0.00. Kualitas Informasi tidak memiliki pengaruh yang signifikan terhadap Kegunaan yang Dirasakan dengan nilai p = 0.11. Selanjutnya, kualitas sistem tidak memiliki pengaruh yang signifikan terhadap kegunaan yang dirasakan dengan nilai p=0.16 tetapi memberikan pengaruhnya melalui kualitas informasi dengan pengaruh totalnya sebesar 0.703. Kualitas informasi tidak memiliki pengaruh yang signifikan terhadap kepuasaan pengguna dengan p=0.393 tetapi memberikan pengaruhnya melalui kegunaan yang dirasakan dengan pengaruh totalnya sebesar 0.383. ]]>
<![CDATA[INFLUENCE OF ALBASIA WOOD ON MECHANICAL PROPERTIES AND MORPHOLOGY OF EPOXY COMPOSITES ]]>
<![CDATA[Henny Pratiwi]]>
<![CDATA[ Angkasa: Jurnal Ilmiah Bidang Teknologi Vol 10, No 2 (2018): November ]]>
Publisher : <![CDATA[Institut Teknologi Dirgantara Adisutjipto ]]>
Show Abstract
|
Download Original
|
Original Source
|
Check in Google Scholar
|
Full PDF (1730.147 KB)
|
DOI: 10.28989/angkasa.v10i2.355
<![CDATA[This research aims to investigate the effects of albasia wood filler as alternative reinforcement for extravagant and non-renewable filler being used in epoxy composites. The filler size used was 30 mesh and various filler volume fractions were 10, 20, 30 and 40 percent. Composites were manufactured using hand lay-up method. Properties such as tensile strength, elongation, modulus elasticity and strain energy absorption were determined based on ASTM standard. The results show that filler volume content significantly affects the tensile properties and impact strength of albasia wood-epoxy composites. The optimum tensile properties are achieved when 10 percent filler is added into epoxy matrix. The impact test also shows the same results. Further addition of filler decreases the mechanical properties of composites due to the existence of weak interfacial interaction between the albasia wood filler and polymer matrix for higher filler volume concentration beyond 10 vol. %. The scanning electron micrograph reveals that there are voids and pull-out mechanism on tensile fracture surface which are the cause of the composites failure.]]>
<![CDATA[APLIKASI MONITORING CAPAIAN KOMPETENSI PESERTA DIDIK DI SMA KOLOMBO YOGYAKARTA ]]>
<![CDATA[Andika Bayu Saputra]]>;
<![CDATA[Ari Cahyono]]>
<![CDATA[ Angkasa: Jurnal Ilmiah Bidang Teknologi Vol 10, No 2 (2018): November ]]>
Publisher : <![CDATA[Institut Teknologi Dirgantara Adisutjipto ]]>
Show Abstract
|
Download Original
|
Original Source
|
Check in Google Scholar
|
Full PDF (1933.301 KB)
|
DOI: 10.28989/angkasa.v10i2.364
<![CDATA[Colombo High School is an educational institution in charge of handling activities related to education. As an educational institution at present the 2013 curriculum report data management still uses Microsoft Excel applications with the step of the subject teacher submitting the file value to the homeroom teacher and the homeroom teacher will process the value data and submit it to the curriculum section for printing. Of course this requires a long time and is not effective. Another problem that arises is that the current process is perceived to be less optimal and efficient, the guardian of the student must go to the school every semester which requires a lot of time for the guardians of students who cannot attend the division of the Colombo High School students' achievement report and the report can only be seen at a certain time. This research was designed and built using the CodeIgniter framework and uses a MySQL database as well as the System Development Life Cycle (SDLC) method of the waterfall model which can help the school, namely teachers, homerooms and curriculum parts in terms of report card management and for learners.]]>
<![CDATA[MODIFICATION OF ROTOR BLADES SHAPE OF VERTICAL AXIS WIND TUBINE (VAWT) ]]>
<![CDATA[Buyung Junaidin]]>
<![CDATA[ Angkasa: Jurnal Ilmiah Bidang Teknologi Vol 10, No 2 (2018): November ]]>
Publisher : <![CDATA[Institut Teknologi Dirgantara Adisutjipto ]]>
Show Abstract
|
Download Original
|
Original Source
|
Check in Google Scholar
|
Full PDF (2018.779 KB)
|
DOI: 10.28989/angkasa.v10i2.363
<![CDATA[Vertical Axis Wind Turbine (VAWT) telah dikembangkan berdasarkan kriteria desain dan pertimbangan performa yang diinginkan seperti desain Darrieus dengan bentuk rotor-H, bentuk rotor-V dan bentuk rotor-Troposkein dan desain Gorlov dengan bentuk rotor-helix. Penelitian ini fokus pada modifikasi bentuk bilah rotor VAWT skala kecil yang telah dibuat sebelumnya dari bentuk lurus (straight shaped) menjadi bentuk puntir (helical shaped) untuk meningkatkan performa aerodinamika bilah rotor VAWT. Analisis performa aerodinamika rotor VAWT dilakukan menggunakan pendekatan model double-multiple stream-tube (DMS). Analisis dilakukan dengan variasi sudut puntir bilah sebesar 45o , 60o, 75o, 90o, 105o dan 120o. Hasil analisis performa rotor menunjukkan bentuk puntir bilah tidak mempengaruhi besar nilai koefisien power turbin angin yang dihasilkan rotor, tetapi torsi yang dihasilkan oleh bilah puntir untuk semua sudut putar memiliki arah yang sama yang dapat mempertahankan putaran turbin yang menghasilkan power yang konstan, berbanding terbalik dengan bentuk bilah lurus. Dari semua sudut puntir yang dianalisis, disimpulkan bahwa sudut puntir yang menghasilkan nilai torsi besar dan power konstan adalah sudut puntir 45o.]]>
<![CDATA[Three-Dimensional Animation of Human Blood Circulation System Using High Poly and Particle System Techniques ]]>
<![CDATA[Nurcahyani Dewi Retnowati]]>
<![CDATA[ Angkasa: Jurnal Ilmiah Bidang Teknologi Vol 10, No 2 (2018): November ]]>
Publisher : <![CDATA[Institut Teknologi Dirgantara Adisutjipto ]]>
Show Abstract
|
Download Original
|
Original Source
|
Check in Google Scholar
|
Full PDF (3952.101 KB)
|
DOI: 10.28989/angkasa.v10i2.366
<![CDATA[Circulatory system learning can use three-dimensional animation to facilitate the delivery of material in teaching and learning activities in elementary schools. In making the three-dimensional animation using Autodesk Maya software and 3Ds Max software. The techniques used include High Poly techniques and Particle System techniques. Heart and lung organs, visualized in three dimensions using High Poly techniques while animation of circulatory systems in humans using Particle System techniques. The application function test results indicate that this application can run according to its function and the results of testing the use of applications with the teacher respondents with calculations using a Likert scale obtained results of 97.2% and these results fall into the very good category (using the calculation of interval formulas), so that conclusions are obtained that the three-dimensional animation application of the circulatory system can be applied and can assist the teacher in providing student learning in elementary school.]]>
