cover
Article Per Year (5 Year)
All
Home Page
OAI Link
Editorial Team
Contact
Reviewer
Google Scholar
Contact Name
-
Contact Email
-
Phone
-
Journal Mail Official
-
Editorial Address
-
Location
Kab. sleman,
Daerah istimewa yogyakarta
INDONESIA
Media Teknika
Published by Universitas Sanata Dharma
ISSN : -     EISSN : -     DOI : -
Core Subject : Engineering,
Engineering
Arjuna Subject : -
Articles 54 Documents
 1   2   3   4   5 
Gas Pipeline Hydrodynamic Analysis Based on Beggs-Brill Correlation Astyanto, Achilleus Hermawan
Media Teknika Vol 11, No 2 (2016)
Publisher : Sanata Dharma University

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (583.78 KB) | DOI: 10.24071/mt.v11i2.291

Abstract

A reliable pipeline design requires hydrodynamic analysis. The analysis enables flow rate and pressure gradient investigations in obtaining an optimum configuration. In the other hand, a numerical approach occurs as a complex schematic is proposed. Solving this requirement, an iterative method is posible to be endorsed. This study aims to investigate single-phase gas pipeline hydrodynamic analysis. A model utilized a two-phase pressure gradient correlation, namely Beggs-Brill correlation, to converse single-phase gas pressure gradients into mass flow rates. Furthermore, the numerical method, called Newton-Raphson, is assesed on solving those iterative calculations. The results show that the model is able to solve a complex schematic. The mass flow rates obtain in the deviation up to 0.4 %, whereas the pressure gradients deviation is achieved on a higher value. 
Unjuk Kerja Model-Model Kincir Angin Savonius Dua Tingkat Dengan Kelengkungan Sudu Termodifikasi Rines, Ir.
Media Teknika Vol 11, No 1 (2016)
Publisher : Sanata Dharma University

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (742.56 KB) | DOI: 10.24071/mt.v11i1.513

Abstract

Savonius windmill is a kind of vertical axis windmill which is potential used to capture the energy from the wind. This research’s objective is to investigate about the dimension effects on the performance of the Savonius windmill models with modified curves and blades configuration. All of the models were made in two stages which each stage have two blades. Six dimension variations of windmill models has been made and investigated in range from 0.432 m2 to 0.552 m2. This research was conducted in a wind tunnel at wind speed range between 4 m/s to 7 m/s. The results showed that there were effects of the dimension of windmill on its performance. The lowest value of peak power coefficient is produced by a windmill model 92 cm of rotor,s diameter and 60 cm in height, that is about 0.31 at tip speed ratio 1.08.  The highest one is produced by windmill model 60 cm of rotor,s diameter and 92 cm in height, that is about 0.49 at tip speed ratio 1.18.
PENERAPAN MODEL MULTIMEDIA SEBAGAI MEDIA PEMBELAJARAN ALTERNATIF UNTUK MENINGKATKAN SELF MOTIVATED LEARNING DAN SELF REGULATED LEARNING Moelbatak, Emiliana M; Bria, Yulianti Paula
Media Teknika Vol 11, No 2 (2016)
Publisher : Sanata Dharma University

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (761.306 KB) | DOI: 10.24071/mt.v11i2.519

Abstract

Teknologi multimedia merupakan Salah satu teknologi yang ditawarkan dalam media pembelajaran alternatif untuk dimanfaatkan dalam dunia pendidikan saat ini. Hardcopy yang digunakan dalam Proses Belajar Mengajar terkadang menyulitkan pelaku pendidikan dalam hal mengakses dan menerima informasi secara cepat dan realtime, sehingga memunculkan ide untuk mengembangkan materi pelajaran dalam bentuk multimedia, yang akan memudahkan pendidik dan peserta didik dalam menjalankan aktivitas dalam PMB. Kejenuhan belajar akan muncul Apabila pendidik selalu menggunakan metode yang konvensional secara terus menerus dan tanpa ada variasi, karena tidak ada warna baru dalam PBM. Implikasi dari metode belajar secara konvensional yang digunakan oleh tenaga pendidik, menunjukkan bahwa 20% atau lebih peserta didik kurang antusias dan berminat mempelajari materi, 35% atau lebih peserta didik kurang mempunyai inisiatif untuk mencari atau memperdalam wawasan melalui referensi lain selain yang diberikan oleh tenaga pendidik. Permasalahan lain adalah, ketersediaan sumber belajar di perpustakaan sangat minim, sehingga materi yang didapat pun kurang up to date. Hal ini semakin memperkuat permasalahan kurang berminat dan rendahnya inisiatif peserta didik dalam proses belajar mengajar.Pada penelitian ini, dikembangkan multimedia dan pemodelan multimedia yang dapat meningkatkan Self Motivated Learning dan  Self Regulated Learning dengan menggunakan metode penelitian pengembangan research and development, dan analisi akhir dilakukan pengujian dengan bantuan SPSS.Model digitalisasi media pembelajaran ini mampu membuat peserta didik menjadi tertarik untuk belajar secara aktif dan mandiri.
Analisis Pengendalian Kualitas Produk Sanitary Ware Dengan Pendekatan Metode FMEA di PT. XYZ Siregar, Khawarita; Siregar, Syahrul Fauzi
Media Teknika Vol 11, No 1 (2016)
Publisher : Sanata Dharma University

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (697.721 KB) | DOI: 10.24071/mt.v11i1.508

Abstract

PT. XYZ is a company engaged in manufacturing of sanitary ware products. Various obstacles are faced by PT. XYZ in the course of its production, one of which is the problem of the quality of products produced from every production process. Based on historical data from July 2014 – June 2015, the percentage of defect for C models squat toilets reached 20.26%. The company  wants  the  upper  limit of  defects  products only  reached  12%  for  each  period of production. Based on previous research, there are two dominant types of defects are cracked/broken and uneven color. Therefore needed improvement through analysis of quality control approach FMEA method and ANOVA. The result of FMEA for cracked/broken defects obtained failure mode is the temperature and duration of combustion products are not appropriate (RPN numbers amounted to 648) and for uneven color obtained failure mode is glazed improper composition (RPN numbers of 576). This study also will provide corrective suggestions  through  the  design  of  experiments  by  ANOVA  method.  The  results  of  the experiment  with  the  design  of  interaction  factor  ANOVA  showed  that  long  combustion products,  glazed  composition  and  temperature  of  the  combustion  products  provide  a significant effect on the amount of product defects
Penyelesaian Masalah Pemotongan Rol Kertas dengan Metode Penghasil Kolom Mahadika, Rosa Ajeng; Ph.D, Hartono
Media Teknika Vol 11, No 1 (2016)
Publisher : Sanata Dharma University

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (929.986 KB) | DOI: 10.24071/mt.v11i1.514

Abstract

Paper industry produces paper rolls called jumbo rolls using paper machines. The paper rolls are then cut into rolls with different widths. The widths of rolls are determined by the customers’ demands and the different number of ordered rolls so that it is necessary to have an organization of cutting pattern from a jumbo into small rolls. The organization of cutting pattern aims to minimize the number of jumbo rolls used and rest of cutting.This research implements a column generation method to solve the problem. The column generation method is one of the linear programming techniques for the problem of supplies cutting. The iteration of column generation method uses revised simplex and knapsack problem with the completion of branch-and-bound method. If a solution is not an integer, the solution is converted into the integer using the first-fit decreasing method. Then, a display program with MATLAB is made based on the column generation algorithm. In this program, the solution may be in form of the number of rolls or the weight of rolls.Numerical examples are then carried out to show the effectiveness of the method. Based on the result of the simulation, the optimal solution is obtained, namely the minimum number of jumbo rolls and rest for several incoming order cases. In comparison to the manual calculation commonly practiced by paper industry, the results are well fitted. However, for big problems our approach is better because manual calculation is almost impossible to be done due to the expanding number of possible cutting pattern combinations.
Analisa Kinerja Lemari Pendingin Alami Sebagai Penyimpan Sayur dan Buah-buahan dengan Media Pendingin Air Sitorus, Tulus Burhanuddin; Sitepu, Tekad
Media Teknika Vol 11, No 2 (2016)
Publisher : Sanata Dharma University

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (969.702 KB) | DOI: 10.24071/mt.v11i2.520

Abstract

One application of direct evaporation cooling system was a natural refrigerator. The advantages of this natural refrigerator was operating without using electrical energy or mechanical energy and environmentally friendly. This study aims to gain a performance analysis of natural refrigerator as a store of vegetables and fruits which uses water as the cooling medium. Material of natural refrigerator consists of teak wood and gunny. Experiments were conducted during seven days in the open space which exposure to solar radiation. The measurement of weather parameter  was done by using HOBO devices and to record temperature changes of vegetables and fruits in the natural refrigerator was used acquisition data. The results showed that the efficiency of natural refrigerator maximum that can be obtained was 14.7% with an average air temperature of 25,55oC, air humidity average of 91.34% and an average solar radiation of 108.45 W/m2. The experimental data showed that the freshness of vegetables and fruits heavily influenced by weather conditions.
Karakteristik Teknis Prioritas Proses Produksi Karung Goni Plastik dengan QFD Sari, Rahmi M
Media Teknika Vol 11, No 1 (2016)
Publisher : Sanata Dharma University

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (455.818 KB) | DOI: 10.24071/mt.v11i1.509

Abstract

Woven sacks made of plastic are used by various businesses. One of these business sectors that use plastic woven sacks is rice refining company. During this time, the quality of the resulting plastic woven products is still low and inconsistent. The Company experienced many problems with product defects caused by the production process. This is demonstrated by the large number of plastic woven sacks is not elastic, cannot withstand the load and tear. Troubleshooting for plastic woven products can be solved by QFD as a tool for identifying the need for good production process and connecting them with technical characteristics. The main focus of this method is to engage customers and experts in the product development process. Results of QFD would be used to improve product design. The results of this study indicate that the thread rolling process is a major cause of problems.
Media Sosial bagi Desa Wisata: Sebuah Kajian Konseptual Wijaya, Stefanus Wisnu
Media Teknika Vol 11, No 2 (2016)
Publisher : Sanata Dharma University

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (697.721 KB) | DOI: 10.24071/mt.v11i2.516

Abstract

Social media is the application of information technology that has revolutionized the tourism business. The role of social media in the tourism business has been able to change the pattern of tourism businesses, even small to facilitate tourism industry to compete. However, this situation has not received an adequate response from the Indonesian tourism industry represented by the ICT readiness index is still low. This shows that the capability of human resources in the use of ICT including social media applications are still low. For that we need an approach that is able to increase literacy social media for the tourism industry, particularly small scale industries such as tourism village. Tourism Village has a unique characteristic among the tourism industry. Village tourism industry based on strong social capital among industry players tourist village. So that the process of improving the management capacity of rural tourism situation should be able to tune the social environment of rural tourism for the purpose of social media literacy peningkatana capacity can be achieved. The approach of participatory action research is considered in accordance with the characteristics of a tourist village. Involvement of researchers and research subjects in the process of improving literacy social media, especially during the process of mentoring and reflection are considered to help achieve the objectives of the study.
Upaya Penyeimbangan Kapasitas Stasiun Kerja Dengan Pendekatan Theory Of Constraint Wahyuni, Dini; Syahputri, Khalida; Mangunsong, Evalina
Media Teknika Vol 11, No 2 (2016)
Publisher : Sanata Dharma University

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (742.47 KB) | DOI: 10.24071/mt.v11i2.521

Abstract

This research was conducted in fishmeal processing companies in North Sumatera. The production process are sorting, washing, heating, pressing, drying, milling and packaging. Heating, pressing, and drying has the smallest capacity work station which is 1 ton per hour, while the washing station is 4 ton per hour, lead to bottleneck. Stop Watch Time study used to measure working elements’ cycle time in each work station during the 10 days of observation. Observation data tested by uniformity and adequacy test before determining standard time of working process. Demand for a year later is predicted using cyclical method so that capacity requirement can be obtained from that prediction and standard time of process. Theory of Constraint (TOC) is used to solve the bottleneck. Research showed that data measured are uniform and adequate; while constraint are found at the heating, pressing, and drying work station due to smaller capacity. That constraints can be solved by using five steps of TOC which obtained four alternative solutions, which is work load adjustment, overtime, addition of shifts or addition of machines. Alternatives for work load adjustment and addition of machines are not feasible after calculating them. Feasible alternatives are overtime and addition of shifts, which lead to cost consequences between them. Recommendation from this research is addition of shifts from 2 to 3 shifts per day to increased capacity for each heating, pressing and drying stations because they have the lower cost consequences.
Perbaikan Proses Bisnis Pengelolaan Data Penelitian pada Perguruan Tinggi : Sebuah Model Konseptual Inderawati, MM Wahyuni; Sukwadi, Ronald; Hutahean, Hotma A.
Media Teknika Vol 11, No 1 (2016)
Publisher : Sanata Dharma University

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (567.617 KB) | DOI: 10.24071/mt.v11i1.510

Abstract

The performance of research and publications was an important measure of the academic reputation in higher education institution. A leading private university in Jakarta had poor performance in research and publications. This research showed that the cause was the lack of good data management mechanism of research and publication. Therefore, it could not give a good report. This research has created a conceptual model of data management research and publications by utilizing information system database. It would produce reports that required by both internal and external stakeholders.

Page 1 of 6 | Total Record : 54

 1   2   3   4   5 

Filter by Year

2016 2017


Reset
Filter By Issues
All Issue Vol 12, No 2 (2017) Vol 12, No 1 (2017) Vol 11, No 2 (2016) Vol 11, No 1 (2016)