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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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Jurnal Technoscientia vol 9 no 2 Agustus 2017-Cover-Redaksi-Daftar Isi Jurnal Teknologi Technoscientia
JURNAL TEKNOLOGI TECHNOSCIENTIA Technoscientia Vol 9 No 2 Februari 2017
Publisher : Lembaga Penelitian & Pengabdian Kepada Masyarakat (LPPM), IST AKPRIND Yogyakarta

Jurnal Technoscientia vol 9 no 2 Agustus 2017-Full Paper Jurnal Teknologi Technoscientia
JURNAL TEKNOLOGI TECHNOSCIENTIA Technoscientia Vol 9 No 2 Februari 2017
Publisher : Lembaga Penelitian & Pengabdian Kepada Masyarakat (LPPM), IST AKPRIND Yogyakarta

PENGENDALIAN KECEPATAN MOTOR BRUSHLESS DC (BLDC) MENGGUNAKAN METODE LOGIKA FUZZY Agung Dwi Yulianta; Sasongko Pramono Hadi; Suharyanto -
JURNAL TEKNOLOGI TECHNOSCIENTIA Technoscientia Vol 8 No 1 Agustus 2015
Publisher : Lembaga Penelitian & Pengabdian Kepada Masyarakat (LPPM), IST AKPRIND Yogyakarta

BLDC motors were operated in many industrial environments, especially flammable industry. Besides, it possessed higher efficiency than induction motors, and smaller dimensions than a conventional direct current motors. Moreover, the absence of brush allowed its treatment became easy and showed almost no noise.Fuzzy logic was used as one of the motor speed controlling methods. The design of fuzzy controllers was done by simulating the output speed based on fuzzy controlling reference in order to obtain optimal control results. Several types of defuzzification used were COA / centroid, bisector, MOM, LOM, and SOM. Transient and calculation methods were used to analyze the ISE design optimization of control. The result showed that defuzzification method was able to follow the speed setting that was provided by COA method.The testing on changes of the speed setting from 1000 rpm to 2000 rpm showed the response characteristics of conventional PID control system with an average value of the rise time (tr) 0.29 second, steady time (ts) 0.9 second, overshoot 8.63%, and the percentage of ISE 98.19%. While results generated on fuzzy control system were average value of rise time (tr) 0.25 second, steady time (ts) 0.27 second, overshoot 0.15% and the percentage of ISE 99.36%. The fuzzy control system which was implemented to set the BLDC motor could improve the performance of conventional PID.

PERANCANGAN REPOSITORY PENGETAHUAN TUMBUHAN OBAT BERBASIS ONTOLOGY MENGGUNAKAN PROTÃ‰GÃ‰ 4.3.0 Azimah, Ariana; Jusuf, Heni
JURNAL TEKNOLOGI TECHNOSCIENTIA Technoscientia Vol 8 No 1 Agustus 2015
Publisher : Lembaga Penelitian & Pengabdian Kepada Masyarakat (LPPM), IST AKPRIND Yogyakarta

Indonesia is a country that has biodiversity many benefits for human survival. One is the herbs that can be used as an herbal medicine. In the modern era of herbal medicine is still often taken as a first aid when someone is having health problems. Herbal medicine can be obtained by utilizing the natural surroundings of this .repository can usage information medicinal plants for health. In This paper discussed about the design of which will be carried out based ontology using protÃ©gÃ© tools.generate a repository of medicinal plants that are useful to society

ANALISIS PENGARUH PENINGKATAN INTERFERENSI MS USER LAYANAN SUARA, DATA DAN VIDEO PADA SISTEM MULTISEL TERHADAP BESARNYA KAPASITAS HOME CELL DENGAN ARAH REVERSE LINK PADA SISTEM CDMA Santoso, Gatot
JURNAL TEKNOLOGI TECHNOSCIENTIA Technoscientia Vol 8 No 1 Agustus 2015
Publisher : Lembaga Penelitian & Pengabdian Kepada Masyarakat (LPPM), IST AKPRIND Yogyakarta

The future technology of the technology of wireless communication system must be able to serve a multimedia application, included voice, data, and high speed video information. CDMA is one of the communication technology which can be used and have been proved as a technique of multiple access that capable of provide this service requirement. In this system the multicell is analyzed until two tier and the system of multiclass is divided into three classes of traffic which are class 1 for voice, class 2 for data, and class 3 for video services. The analysis of capacity is done according to the effect of variable quality of services, chip rate, bit rate and activity factor. The result show that higker chip rates can maintain the required BER of each information and achieve the user capacity in high traffic condition. However, larger bit rate will decrease total capacity. Furthermore larger activity factor will decrease total capacity of system. So the effect of interference in multi cell system can decrease home cell capacity of offered information traffics.

PERANCANGAN MODEL ALAT BANTU TERAPI STROKE NON FARMAKOLOGIS DENGAN GANGGUAN PENURUNAN KEKUATAN OTOT Sejati, Rr. Hajar Puji; Muhimmah, Izzati
JURNAL TEKNOLOGI TECHNOSCIENTIA Technoscientia Vol 8 No 1 Agustus 2015
Publisher : Lembaga Penelitian & Pengabdian Kepada Masyarakat (LPPM), IST AKPRIND Yogyakarta

This paper discusses the design tool to model non-pharmacological treatment of stroke patients based on multimedia. Definition of stroke according to the World Health Organization (WHO) is a clinical sign of either focal or global form of brain dysfunction that develops quickly, with symptoms lasting 24 hours or longer and can lead to death, with no apparent cause other than vascular. Therapeutic exercises strengthening muscle strength in case of a decrease in muscle strength in this study is part of a post-stroke rehabilitation. The design model of this tool is expected to help the families of stroke patients to perform self-therapy. Stroke patients who will be treated in this study is limited to disorders with decreased muscle strength. This multimedia-based designs used to simplify the user to see a visual example with multimedia. The result of this study is an example of exercise in form of animation.

ALAT BANTU ANALISIS KERUSAKAN ANTI-FRICTION BEARING PADA UNIT ALAT BERAT Wijayanto, Jarot
JURNAL TEKNOLOGI TECHNOSCIENTIA Technoscientia Vol 8 No 1 Agustus 2015
Publisher : Lembaga Penelitian & Pengabdian Kepada Masyarakat (LPPM), IST AKPRIND Yogyakarta

Damage to engine part from unit of heavy equipment that often happens will interfere the activity of production because the unit of heavy equipment automatically will experience improvement. With the anticipation of anti-friction bearing demage will reduce the repair of any units of heavy equipment caused by damage to the anti-friction bearing. The purpose of creation of this tool is to help examine and analyze the damage often occurs on anti-friction bearing in unit of heavy equipment. Method of making a tool anti-friction bearing damage analysisis, on unit of heavy equipment with operating conditions approachh happens i.e. aspect of the workload and working temperature. Simulationas media tool anti-friction bearing damage can be done. The result of manufacture of tool breakage analysis of anti-friction bearing this could make it easier to know the working conditions and the variable load and speed rounds so the data parameter causes damage taken (annihilation due to the influence of vibration and haeat which occurs). Components anti-friction bearing damage analysis tool i.e. dinamo 3 phase 1500rpm, inventer, coupling flens Ã†6â€™, shaft Ã†70mmx600mm, pillow bearing Ã†70mm, Housing bearing and punch, inner pack capacity 10ton, ball bearing, frame.

PENGEMBANGAN SISTEM KENDALI OTOMATIS PROSES RECHARGING TINTA SPIDOL WHITEBOARD Khairudin, M.; Ridho, R.N.
JURNAL TEKNOLOGI TECHNOSCIENTIA Technoscientia Vol 8 No 1 Agustus 2015
Publisher : Lembaga Penelitian & Pengabdian Kepada Masyarakat (LPPM), IST AKPRIND Yogyakarta

Control system on the recycle process of markers ink aims to control charging ink on the recycle process of whiteboard markers ink. The process of opening the lid will automatically proceed with the charging process of whiteboard ink. The objectives of this tool are to control the time of ink charging using the solenoid. Solenoid control using the minimum system of microcontroller. The hardware consists of a circuit of microcontroller of ATmega16, driver of solenoid valve using L298 IC, push button, power supply and mechanics for opening and closing markers. It is expected this system can help the process of ink recharging automatically on the whiteboard markers. The performances of lever cap on the recycle process of markers ink show proper performance. The system can fill ink to the markers accordance with the planning. The volume of the markers ink with capacities of up to 25% with the ink discharge of 0,003 liters / second. The system has an average of percentage error of less than 2% of the measured voltage.

PENGARUH DIMENSI TRUST, KEAMANAN DAN PRIVASI TERHADAP KEPERCAYAAN PENGGUNA UNTUK LAYANAN CLOUD COMPUTING BERBASIS SOFTWARE AS SERVICE Haryani, Prita; Nugroho, Eko; Adhipta, Dani
JURNAL TEKNOLOGI TECHNOSCIENTIA Technoscientia Vol 8 No 1 Agustus 2015
Publisher : Lembaga Penelitian & Pengabdian Kepada Masyarakat (LPPM), IST AKPRIND Yogyakarta

Cloud computing is one of latest innovation in the development of Internet-based computing technology. Cloud computing uses virtualization concepts that can be accessed via Internet, so can reduce the cost of Information Technology (IT) and facilitate IT service management. Service provided is multi-tenant so computing resources can be used together and adjusted to user needs (elasticity). Software as a Service (SaaS) is cloud computing services frequenly used. Security is a major problem in the development of cloud computing technology. Guarantee of security and privacy user data, it will raise trust of users to vendor.The study aims to analyze the factors can be effected trust of cloud computing user based on Software as a Service (SaaS). Samples that used are users who have been using cloud computing services based on Software as a Service (SaaS) more than three months. Instrument used is questionnaire and measured by scale Likert. There were 50 respondent in this study. The data analysis method used is Partial Least Square. Results of the study found that factors significantly affect user trust are ability, security and privacy of vendor.

RELIABILITY-CENTERED MAINTENANCE (RCM) EVALUATION METHOD IN THE INDUSTRY APPLICATION, CASE STUDY: FERTILIZER COMPANY, INDONESIA Khasanah, Rahayu; Dawal, Siti Zawiah Md.; -, Jamasri
JURNAL TEKNOLOGI TECHNOSCIENTIA Technoscientia Vol 8 No 1 Agustus 2015
Publisher : Lembaga Penelitian & Pengabdian Kepada Masyarakat (LPPM), IST AKPRIND Yogyakarta

Nowadays, Reliability-centered Maintenance (RCM) has become the solution to determine the type of maintenance tasks and inspections needs to be performed to the assets in achieving effective and efficient maintenance. However, implementing RCM is not enough to achieve optimization of maintenance planning. The evaluation, as one of the important point should be done to prove the benefits of RCM and to continuously improve the maintenance planning. In this study, the effects of RCM implementation in the industry application were evaluated, as a step for continuous improvement in RCM application. The case study is an Ammonia plant in a fertilizer company in Indonesia. This research evaluates the RCM effects by investigating and analyzing Downtime Loss and Mean Time between Failures (MTBF). The problems in RCM implementation in the case study also investigate as a basic for giving the recommendation to the company as a way to improve the RCM implementation. In general, the findings from the investigation of case study affirm that RCM implementation do improve the plant performance which are showed by decreasing of Downtime Loss and Mean Time between Failures. The significant problems that become pitfalls in RCM implementation process are about the workerâ€™s culture and understanding on the RCM process. Overall, the study shows that RCM implementation brings many benefits to the company by decreasing the Downtime Loss and Mean Time between Failures which can be resulted as the higher profit for the company.

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