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
Kota pekanbaru,
Riau
INDONESIA
Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains
Published by Universitas Riau
ISSN : -     EISSN : -     DOI : -
Core Subject : Engineering,
Engineering
Arjuna Subject : -
Articles 3,145 Documents
 38   39   40   41   42 
Analisis Peningkatan Keandalan Jaringan CATV Pada PT. Chevron Pacific Indonesia Dari Sistem Coaxial Cable ke Sistem Fiber Optic Wijaya, Indra Putra; Safrianti, Ery; Sari, Linna Oktaviana
Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains Vol 2, No 2 (2015): Wisuda Oktober Tahun 2015
Publisher : Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains

Show Abstract | Download Original | Original Source | Check in Google Scholar

Abstract

Chevron Pacific Indonesia ( CPI ) is one company that has a long establish the CATV network operation using coaxial cable system. CATV over time networks with this system experienced a slump of quality or reliability. This is certainly not desired by the CPI, due to the failure resulting in service less than the maximum. Therefore CPI change the system using fiber optic system that can boost reliability. Reliability is one of the important performance, because the results of the reliability prediction can be used to determine the option to use an instrumentation and implementation on a CATV network. Reliability parameters of a network include the availability (availability), system downtime and Mean Time to Failure (MTTF) or prediction of the lifetime of a network. By analyzing the above parameters obtained the level of system CATV network availability in the CPI, rumbai district greater than 99.99%. The level of availability (availability) is obtained in fiber optic systems have an average 99.9923655%, with the value system down time at 40.1266692 min / year, and Mean Time to Failure (MTTF) is 29.0259193 years. With the above calculation can be concluded that the fiber optic system on CATV networks in the CPI has reached the applicable standards, even much better.Keywords: Down Time System, CATV networks, coaxial cable, fiber optic reliability Engineering Markov Methode
Simulasi Kinerja Modulasi Pada Jaringan WiMAX Dengan Menggunakan Simulator OPNET Modeller 14.0 Ilham Dwi Anshori; Anhar Anhar; Yusnita Rahayu
Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains Vol 2, No 2 (2015): Wisuda Oktober Tahun 2015
Publisher : Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains

Show Abstract | Download Original | Original Source | Check in Google Scholar

Abstract

Access communication fast, flexible and reliable is needed to support the growing information technology. Therefore, needed a network that can meet those criterias, one of which is WiMAX (Worldwide Interoperability for Microwave Access). One of features that is given to optimize the quality of the WiMAX network is to use a modulation technique, such as QPSK, 16QAM, and 64QAM. The purpose of this study is to analyze the performance of WiMAX networks that include Bit Error Rate (BER), Signal to Noise Ratio (SNR), delay and throughput. In this research, the WiMAX network is simulated using OPNET simulator which consists of two scenarios. In Scenario 1 consists of 3 cell with 9 users, while the second scenario consists of 4 cell with 12 users. Research shows that the lowest BER value in scenarios 1 and 2 is achieved with QPSK modulation with a value of 8 x 10-6 and 8,05 x 10-6. While the highest SNR value in scenario 1 and 2 is achieved with QPSK modulation with a value of 34.25 dB and 44.06 dB. The calculation of throughput, highest throughput inscenarios 1 and 2 is achieved with 64QAM modulation with a value of 60.79 Mbps and 52.60 Mbps. As for the delay calculation, the value of the lowest delay in scenarios 1 and 2 isachieved with QPSK modulation with a value of 7.16 ms and 4.20 ms.Keywords : modulation techniques , BER, SNR, delay, throughput
Perancangan Jaringan Voice Over Internet Protocol (VOIP) Fakultas Teknik Universitas Riau Putri, Veni Yuherlina; Anhar, Anhar; Sari, Linna Oktaviana
Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains Vol 2, No 2 (2015): Wisuda Oktober Tahun 2015
Publisher : Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains

Show Abstract | Download Original | Original Source | Check in Google Scholar

Abstract

This research discuss the designing of Voice over Internet Protocol (VoIP) in Engineering Faculty of Riau University. LAN of Engineering Faculty is connected through fast ethernet 100baseT cable and the backbone is connected through fiber optic. The project is designed using OPNET Modeler 14.5 Educational Version which consist of two skenario, VoIP network without router and with router. In the VoIP network with router, the network performance is measured by First-In-First-Out Queuing (FQ), Priority Queuing (PQ) and Weighted Fair Queuing (WFQ). The results showed that the value of MOS network with router (4.1 ) is more steadier than the network without router. The best performance of voice application is found in the routerand PQ network, where packet delay, jitter and Mean Opinion Score (MOS) are 330 ms, 0.9 ms, 4.1 respectively. Furthermore the best performance of video conference application is found in the same network where packet delay and jitter are 0.6 secondsand 0.2 seconds.Keywords :VoIP, network, Packet Queuing
Perbandingan Metode Protective Angle Dan Metode Rolling Sphere Pada Proteksi Tegangan Lebih Saluran Distribusi 13,8 KV PT. Chevron Pacivic Indonesia Fadil Pradipta; Dian Yayan Sukma; Edy Ervianto
Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains Vol 2, No 2 (2015): Wisuda Oktober Tahun 2015
Publisher : Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains

Show Abstract | Download Original | Original Source | Check in Google Scholar

Abstract

South Bekasap Area PT. Chevron Pacivic Indonesia was an area that has flash density reach at 1,970 flash/km2/year with IKL level at 136 thunder days per year. The amount of lightning current that strikes phase wires can be minimized by using a ground wire. this is done by adjusting the angle between the ground wire to phase wire to form a region that free from lightning strikes called protected region. In the analysis of protected region, first we must determined the level of lightning protective system needs base on standart that used in Indonesia, called SNI-03-7015-2004. From the analysis of hazard assesment, it was found the level of lightning protection needs at level I with striking distance at 20 meter. Based on data and analysis, then it is known that the distribution line 13,8 kV So.Bekasap has level protection system that is less good. In protective angle method calculations, the single poles (type A, B, and C) have protection region at 33o and double poles (type SAA, SBB, and SCC) at 26o. While based on rolling sphere method, the single poles (type A, B, and C) have protection region at 13o and double poles with double ground wires (type SAA, SBB, and SCC) at 27o.Keywords: protected region, protection system, protective angle method, rolling sphere method.
Analisis Prakiraan Kebutuhan Energi Listrik Tahun 2015-2024 Wilayah Pln Kota Pekanbaru Dengan Metode Gabungan Muhammad Bobby Fadillah; Dian Yayan Sukma; Nurhalim Nurhalim
Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains Vol 2, No 2 (2015): Wisuda Oktober Tahun 2015
Publisher : Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains

Show Abstract | Download Original | Original Source | Check in Google Scholar

Abstract

Forecast of electrical energy needs in PLN Pekanbaru region in the next 10 years using a combined method is a method formulated by combining several methods such as analysis methods, econometric methods, and trend methods, with sectoral approaches is grouping PLN’s customers into four groups of sectors (house hold, commercial, public, and industrial). This forecast is based on the growth of energy consumption and economic growth. The data used is the historical data from 2001 to 2014. The results forecast of total electric energy needs from year 2015 to 2024 is 9.96% per year with energy needs in 2015 is 1899.99 GWh grow into 4466.52 GWh on 2024 while the peak load Pekanbaru City is 281.68 MW in 2015 and grew into a 662.18 MW in 2024.Keywords: forecasting energy needs, peak load, the trend
Sistem Monitoring Photoplethysmograph Berbasis Zigbee Dan Labview Hamdala Hamdala; Yusnita Rahayu; Indra Yasri
Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains Vol 2, No 2 (2015): Wisuda Oktober Tahun 2015
Publisher : Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains

Show Abstract | Download Original | Original Source | Check in Google Scholar

Abstract

Information heartbeat’s per minute and characteristics of heart rate is an essential to be monitored, it shows normal and abnormal condition of heart rate person’s characteristic. The normal heart rate is usually 60-100 bpm. This paper present a system monitoring based on Zigbee and Labview. It monitors heartbeat’s per minute, heart rate characteristic and respiratory rate per minute displayed though Labview GUI. From experimental the heartbeat’s of 89 bpm was obtained, it indicated in normal condition. The heart rate is less than 60 bpm indicated bicardia characteristic, and the heart rate is more than 100 bpm indicated tachicardi characteristic.Keywords: Photoplethysmograph, Heart’s rate, Respiratory rate, Labview, Heartbeat’s, Breathing
Pemanfaatan Limbah Cair Pabrik Pengolahan Kelapa Sawit Sebagai Perekat Pada Pembuatan Briket Dari Arang Pelepah Kelapa Sawit (Elaeis Guineensis Jacq) Sitanggang, Hendri Manogu Pranata; Romy, Romy
Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains Vol 2, No 2 (2015): Wisuda Oktober Tahun 2015
Publisher : Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains

Show Abstract | Download Original | Original Source | Check in Google Scholar

Abstract

Waste of fronds is solid palm oil waste generated from palm oil plantations. To increase the value added, then this waste can be utilized as charcoal briquettes that can be used as an alternative energy source. The purpose of this study were (1) to know proximasi briquettes from palm fronds with adhesive wastewater CPO (Crude Palm Oil), (2) determine the resistance (durability) briquettes palm fronds with CPO adhesive liquid waste, (3) determine the calorific value contained in briquettes midrib palm oil CPO adhesive liquid waste, (4) determine the length of time the use of briquettes in water heating compared with a stove. This study used an experimental method, the object is to use waste oil palm fronds which uses wastewater from the processing of the PKS as an adhesive. By comparison wastewater PKS and palm fronds charcoal that is 30%: 70%, 35%: 65%, 40%: 60%, 45%: 55%, 50%: 50%, 55%: 45%, 60%: 40%, 65%, 35% and 70%: 30%. Based on the research results, obtained the best calorific value contained in the particle size of 50 mesh with the average value of 29176,921 J / g.Keywords: Waste oil palm fronds, charcoal briquettes, endurance (durability), calorific value.
Analisis Evaporative Air Cooler Dengan Temperatur Media Pendingin Yang Berbeda Listiono, Hendra; Aziz, Azridjal; Mainil, Rahmat Iman
Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains Vol 2, No 2 (2015): Wisuda Oktober Tahun 2015
Publisher : Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains

Show Abstract | Download Original | Original Source | Check in Google Scholar

Abstract

Evaporative cooling process occurs when water vapor is added to air having a relative humidity of below 100%. Relative humidity is a value that is contained in the temperature of the dry bulb and wet bulb temperature of the air. the lower the relative humidity, the greater the potential for evaporative cooling. The research was conducted using the experimental test tools Evaporative Air Cooler Honymell CS12AE. Variables used are temperature cooling medium (water) that is 10, 20, 30, 40, and 500C and the wind speed is (4,57m/s), (3.9 m/s), and (2,93m/s). The data used is the wet bulb temperature and dry bulb temperature on the back of the fan, the temperature of the wet bulb and dry bulb temperature in front of the fan and then the temperature of the wet bulb and dry bulb in the room. Data were taken every 10 minutes for 180 minutes. The test results are temperature cooling medium (water) effect on the relative humidity. The highest humidity is achieved at a temperature of the cooling medium (water) 500C ± 30C and the fan speed ishigh with 92.83% relative humidity. And the lowest humidity was 85.87% at a temperature of 100C ± 30C with a cooling medium high fan speed. Coolant temperature effect on the results of the efficiency and the rate of evaporation of water masses. The highest efficiency on the cooling medium temperature of 100C± 30C with an efficiency of 5.42% with a high fan speed. The highest rate of evaporation of the water mass occur at a temperature of 500C ± 30C cooling medium is 0.00039821 kg/s.Keyword : efficiency, relative humidity, tdb, twb.
Desain Dan Manufaktur Mekanisme Pelubang Tanah Mengggunkan Sistem Tugal Pada Tilling Machine Untuk Pemupukan Kelapa Sawit Arief, Dodi Sofyan
Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains Vol 2, No 2 (2015): Wisuda Oktober Tahun 2015
Publisher : Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains

Show Abstract | Download Original | Original Source | Check in Google Scholar

Abstract

Generally, the agriculturist applying the fertilization method by spread fertilize around the plants. This procedure is efficient enough but its effectiveness is poor. Fertilizer applicationby immersing in palm disc area will increase the efficient and effective uptake of NPK by plants, furthermore increase plants productivity, save the quantity of fertilize application, anddecrease environmental pollution. The purpose of this research is to design and create tugal in masking fertilize palm that capable of rapidly perforation. The method of this research is used to get information about the fertilization technique. After finding the information process, measurement tools that already exist is done, it's used plow or tilling machine, the toolredrawn and tugal revelation which be install on tools. After the drawing had done, do the print out of drawing, furthermore do the manufacturing process. According to the calculated, we get tugal's diameter design was 7,62 cm, length 20 cm, whereas tugal's position within 44,48 cm from central wheel, the maximum safety factor was 15, whereas displacementmaximum 0,02054 mm and displacement minimum 0 mm, the result shows that tugal's system is save to used. Time fertilization system manual unknown 3 hours, 30 minutes perhectar, whereas fertilization with tugal's system was shorter time, that is 1 hours 28 minutes.Keywords: land punch, tugal, fertilization mechanism.
Desain Dan Manufaktur Hopper Penyalur Pupuk Menggunakan Valve Metering Mechanism Pada Cultivator Untuk Pemupukan Kelapa Sawit Darmansyah Darmansyah; Dodi Sofyan Arief; Muftil Badri
Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains Vol 2, No 2 (2015): Wisuda Oktober Tahun 2015
Publisher : Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains

Show Abstract | Download Original | Original Source | Check in Google Scholar

Abstract

Fertilization plays an important role in increasing the production of palm oil. Fertilization by manually deployed using the hand is considered less effective because the dose of fertilizer is not uniform and improper fertilization methods. The purpose of thisresearch is to design and make the hopper (tank fertilizer distributor) for precise fit required dose and volume of uniform fertilizer for each tree. The case study method is used to getinformation about fertilization technique and dose of fertilizer. The information obtained is used to design and acquire the dimensions, the shape of the hopper is made. Design methodusing descriptive design french. Once the image is finished then print out the pictures do the work that will be done the manufacturing process. From the calculation and testing obtained capacity ofthe reservoir tank is 7.5 liters, volumemetering 1 0:09 L, metering 2 0.17 L, metering 30.26 L with dimensions of 200 mm × 150 mm × 283 mm. From the simulation results obtained structural analysis of the maximum value of the safety factor 15 minimum safety factor of 3.49, while the maximum displacement and displacement 0.04568 minimum 0 results shows that the hopper is safe to use. Hopper performance results have been obtained through the testing process with an average dose of the valve 1 0.07 kg (urea), 0.08 kg (TSP), valve 2 0.12 kg (urea), 0.14 kg (TSP fertilizer), and valve 3 0.17 kg (urea), 0.19 kg (TSP).Keywords: Design, fertilizationtechnology, fertilizationmechanisms, valve metering mechanism. 

Page 40 of 315 | Total Record : 3145

 38   39   40   41   42 

Filter by Year

2014 2022


Reset
Filter By Issues
All Issue Vol 9 (2022): Edisi 1 Januari s/d Juni 2022 Vol 8 (2021): Edisi 2 Juli s/d Desember 2021 Vol 8 (2021): Edisi 1 Januari s/d Juni 2021 Vol 7 (2020): Edisi 2 Juli s/d Desember 2020 Vol 7 (2020): Edisi 1 Januari s/d Juni 2020 Vol 6 (2019): Edisi 2 Juli s/d Desember 2019 Vol 6 (2019): Edisi 2 Juli s/d Desember 2019 Vol 6 (2019): Edisi 1 Januari s/d Juni 2019 Vol 6 (2019): Edisi 1 Januari s/d Juni 2019 Vol 5 (2018): Edisi 2 Juli s/d Desember 2018 Vol 5 (2018): Edisi 2 Juli s/d Desember 2018 Vol 5 (2018): Edisi 1 Januari s/d Juni 2018 Vol 5 (2018): Edisi 1 Januari s/d Juni 2018 Vol 5, No 1 (2018): Wisuda April Tahun 2018 Vol 5, No 1 (2018): Wisuda April Tahun 2018 Vol 4, No 2 (2017): Wisuda Oktober Tahun 2017 Vol 4, No 2 (2017): Wisuda Oktober Tahun 2017 Vol 4, No 1 (2017): Wisuda Februari Tahun 2017 Vol 4, No 1 (2017): Wisuda Februari Tahun 2017 Vol 3, No 2 (2016): Wisuda Oktober Tahun 2016 Vol 3, No 2 (2016): Wisuda Oktober Tahun 2016 Vol 3, No 1 (2016): Wisuda Februari Tahun 2016 Vol 3, No 1 (2016): Wisuda Februari Tahun 2016 Vol 2, No 2 (2015): Wisuda Oktober Tahun 2015 Vol 2, No 2 (2015): Wisuda Oktober Tahun 2015 Vol 2, No 1 (2015): Wisuda Februari Tahun 2015 Vol 2, No 1 (2015): Wisuda Februari Tahun 2015 Vol 1, No 2 (2014): Wisuda Oktober Tahun 2014 Vol 1, No 2 (2014): Wisuda Oktober Tahun 2014 Vol 1, No 1 (2014): Wisuda Februari Tahun 2014 Vol 1, No 1 (2014): Wisuda Februari Tahun 2014 More Issue