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Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains
Published by Universitas Riau
ISSN : -     EISSN : -     DOI : -
Core Subject : Engineering,
Engineering
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Articles 3,145 Documents
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Perancangan Simulasi Antena Mikrostrip Dengan Slot Butterfly Untuk Aplikasi WiFi Pada Frekuensi Kerja 5,8 GHz Menggunakan CST Microwave Studio Meliza Sukma Riani; Yusnita Rahayu
Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains Vol 3, No 2 (2016): Wisuda Oktober Tahun 2016
Publisher : Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains

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Abstract

Wi-Fi is a technology that is very poluler today. WiFi is an abbreviation of Wireless Fidelity, is a set of standards used for Wireless Local Network (LAN Local Area Networks) whose function is to connect local area networks in a wireless manner. Along with the evolution of telecommunications technology based on wireless technology, then we need for a communication system that can perform high-speed data transmission with good quality. One of the devices supporting wireless communication devices is the antenna. The use and selection of antennas is one of the important factors that affect the performance of the antenna as well as good design and proper installation will ensure the performance of the telecommunications system. Microstrip antenna has the advantages of low profile form, which is easy and inexpensive to produce in mass but has a small gain and bandwidth. This paper discusses the design of the Microstrip antennas patch for WiFi applications that operate at a frequency of 5.8 GHz . In this design uses FR4 epoxy material = 4.4 and a thickness of 1.6 mm, is suitable for application of high-frequency antenna. For the simulation in this paper using the software CST Microwave Studio. From the results of the design using CST studio microvawe is obtained in accordance with the specification antenna, with VSWR ≤ 1.5, gain ≥ 2 dB and return loss ≥ 20 dB.Keywords: Microstrip Antenna,, WiFi, Gain, VSWR, Return Loss
Analisa Percepatan Keterlambatan Proyek (Study Kasus : Kantor Dinas SKPD Pemko Gedung B2 Di Tenayan Raya) Lidwyna, Finsensia; Taufik, Hendra
Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains Vol 3, No 2 (2016): Wisuda Oktober Tahun 2016
Publisher : Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains

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Abstract

Planning and project scheduling always refer to assumptions and forecasting and schedule planning.Problem will occure if there discrepancies between planning and actual. Delay of project implementation will make economies consequencies for owner and contractor. Problem and conflict will arise when there are argument between owner and contractor come along with time and cost additive. The project of governmental office building in Pekanbaru City experienced of 75 days delay. To overcome this problem, there were 3 solutions. First, by using overtime work, second, adding worker and equipment, third, is shift. The analysis focused on the critical path. As a results, the cost of SKPD B2 building construction delay was calculated as Rp. 4.497.790.458,25. The acceleration cost was Rp.2.280.496.543,31 with a total 11690 hours of extra work for workers and 156 hours for total station for overtime work alternative, Rp. 2.719.277.132,05 with 14 workers and 2 equipment on night shift for the addition of workers and equipments alternative, and Rp. 2.719.277.132,05 with 14 workers and 2 units of equipment during the night shift time-shift work alternative. The best acceleration method or alternative was the overtime work method which was timely and its efficiency was 49%.Keywords: Construction delay, construction cost, SKPD B2 Building, overtime, addition of workers and equipments, time-shift work
Analisis Sifat Mekanik Komposit Serat Sabut Kelapa Sebagai Material Alternatif Pengganti Kayu Untuk Pembuatan Kapal Tradisional Aguswandi Aguswandi; Muftil Badri; Yohanes Yohanes
Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains Vol 3, No 2 (2016): Wisuda Oktober Tahun 2016
Publisher : Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains

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Abstract

Recently, it has been difficult to get the wood as a material to construct the traditional ships. Alternatively, the wood can be substituted by composite materials such as the composite of coco fiber. The coco fiber composites have potential to construct a fishing boat. In this research produced the composite plates and investigation of their value of tensile strength and flexural strength. The composite composition was used 70% polyester and 30% coco fiber. Production of the composite plates used Vacuum Assisted Resin Infusion (VARI) method by variation of the direction of fibers (random, continous and woven). Based on the research result that was produced the composite plates sizes of 400 x 400 x 8 mm and the value of tensile strengths of composite coco fiber for random fiber direction of 12.8572 N/mm2, continuous fiber direction of 15.4436 N/mm2 and woven direction of 12.1797 N/mm2. The value of flexural strengths for random fiber direction was 97.3220 N/mm2, continuous fiber direction of 96.1347 N/mm2 and woven fiber direction of 80.3922 N/mm2. In conclusion, the value of the highest tensile strength and the highest flexural strength were a continuous fiber direction and a random fiber direction, respectively.Keywords: Composites, Coco Fiber, VARI.
Perbandingan Sistem Struktur Dan Biaya Pelat Lantai Metode Precast Half Slab Dan Metode Konvensional Mochamad Romi; Iskandar Romey Sitompul; Rian Tri Komara Iriana
Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains Vol 3, No 2 (2016): Wisuda Oktober Tahun 2016
Publisher : Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains

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Abstract

The increase in construction of building need a more efficient of slab construction method. The conventional formwork is considered uneconomical because expensive cost of materialsand labor, longer construction time, and producing significant amount waste of wooden formwork. Currently, green construction have been implemented in building projects such ashalf slab. Half slab method is divided into concrete precast and in-situ concrete works. This research aims to analyze the comparison of precast half slab and conventional method aboutstructural system and cost of construction. A computer program called Safe12 used to define precast half slab and conventional slab model. Safe12 output analysis used to calculatebending moment and shear strength. The cost estimated is according to works volume and the unit price analysis. Based on the analysis results, it observed that bending moment strengthfor precast half slab 28.532 KNm and conventional slab 25.181 KNm, and both method have equally shear strength 84.246 KN. The cost of construction for precast half slab Rp.5,712,441,933.442 and conventional slab Rp. 7,241,288,801.897. The indicates that structural system for both method have similar strength in construction, and cost of construction for precast half slab is more efficient 21,113% than conventional slab cost.Keywords: precast half slab, conventional slab, construction, Safe12
Identifikasi Parameter Signifikan Dalam Penentuan Prioritas Penanganan Banjir Kota Pekanbaru Putra, Afdhal Suzalici; Sandhyavitri, Ari; Fauzi, Manyuk
Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains Vol 3, No 2 (2016): Wisuda Oktober Tahun 2016
Publisher : Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains

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Abstract

The effects of land conversion scheme from forest and agriculture areas to residential areas has significant result in reduction of water catchment areas, subsequently increasing the risk of floods. Therefore, it is necessary to identify significant parameters for flood mitigation. Flood mitigation parameters analyzed by using Decision Support System (DSS) is Analytical Hierarchy Process (AHP) and based on four criterias: technical, economic, environmental, and social/cultural.Based on the AHP analysis with Expert Choice 2000 program resulting in the percentage of most influential parameter criterias in determining flood mitigation priority that are technical criteria 57,0%, environmental criteria 18,7%, economic criteria 16,8%, and social/cultural criteria 7,5%. The most influential sub criterias are drainage system, construction cost and sub DAS rehabilitation, effect of land conversion, and the behavior of littering. Meanwhile percentage for sub DAS Pekanbaru city which become flood mitigation priority are sub DAS Sail 31,7%, sub DAS Senapelan 29,6%, sub DAS Air Hitam 20,9%, sub DAS Sibam 9,8%, and sub DAS Tenayan 8,0%.Key words : Analytical Hierarchy Process (AHP), Expert Choice 2000, Flood mitigation
Model laboratorium Kincir Air Untuk Irigasi Pertanian Putra, Riyon Andeska; Rinaldi, Rinaldi; Hendri, Andy
Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains Vol 3, No 2 (2016): Wisuda Oktober Tahun 2016
Publisher : Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains

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Abstract

Waterwheel comprises of giant wheel equipped with bamboo buckets which rotates due to water flow to lift water from the river to the higher elevation paddy field. The waterwheel model usedin this research was the undershoot water waterwheel. The waterwheel has 55 cm of diameter, 18 blades (6 cm-long and 6 cm-wide), and 1764 kg of weight. This research was done by varying the number and dimension of the boxes to obtain the waterwheel’s optimal number of boxes. The number of boxes variation was 6, 12, 18, 24, 30, and 36 boxes. The box quantity variation was 6.67 ml, 10.5 ml, and 16 ml. The water flow rate was not varied. The result of this research shows that the rotation rate of the waterwheel was affected by the velocity of water driving theblades. The number and volume of the boxes affect the rotation rate of the waterwheel. The maximum flow rate that could be lifted by the boxes was 474.44 ml/minute, 647.78 ml/minute,and 1083.33 ml/minute for type 1, 2, and 3 boxes, respectively.Keywords: model, waterwheel, undershoot
Condition And Monitoring Temperature Berbasis Mikrokontroler Pada Motor Produksi Di PT. Indah Kiat Pulp And Paper Perawang Rahman, Ridho; Amri, Rahyul
Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains Vol 3, No 2 (2016): Wisuda Oktober Tahun 2016
Publisher : Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains

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Abstract

For maintaning stabilitation of production machines in PT. Indah Kiat Pulp and Paper Perawang, it monitores everyday. Monitoring which is done one of about the temperature. It aims to avoid the damages in production machines because of over temperature. In temperature monitoring, the method is done by companies still based on manually with used thermo mini tool. Monitoring with used thermo mini tool need many times because there are many production machines. Beside that, that all are done in one month, thus the data is not real time. Because of that the writer designed condition and monitoring tool based on microcontroller with used temperature sensor LM35. Microcontroller arduino uno used wireless communication, it used RF 433 Mhz and graphic display used LabView software. The aims to give the real time data, quick and easy in monitoring.The result of the research which had been done stated that the condition and monitoring based on microcontroller in production machines in PT. Indah Kiat Pulp and Paper Perawang had been applied successfull. Percentage error ratio sensor LM35 based on microcontroller with thermo mini tool based on manually 1.02%. Speed of time in taking the data reach 5 second with effective interval connectivity RF 433 Mhz as far as 5 meter.Keywords : LM35 sensor, Arduino Uno, RF 433 Mhz, LabView.
Aspek Penerapan Video Segmentasi Sebagai Sistem Pendeteksi Pelanggaran Lalu Lintas Christian Desamta S; Indra Yasri
Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains Vol 3, No 2 (2016): Wisuda Oktober Tahun 2016
Publisher : Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains

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This paper describes analysis of video Segmentation and tracking on highway that is done with using edge detection method. In this paper, method of analysis is using help from software matlab simulink. The proccess of analysis is done by making blocks model for proccessing place of segmentation and tracking. The factor in this study is color conversion, motion detection, background subtraction, blob analysis or making contour and tracking. This analysis is using GUI ( Graphical User Interface) for see the result of video on output from each of block and can see the pixel value on video and can do calculation with using the pattern is usin in this study so the result from analysis calculation and analysis from GUI (Graphical User Interface) is matching.Keyword : Video Segmentation, Video Tracking, Edge Detection, Motion Detection, Matlab, Simulink.
Analisis Keandalan Gardu Induk Teluk Lembu PT. PLN Pekanbaru Dengan Metode Section Technique Menggunakan Software ETAP Athur Marune C; Nurhalim Nurhalim
Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains Vol 3, No 2 (2016): Wisuda Oktober Tahun 2016
Publisher : Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains

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Abstract

Analysis of the level reliability in this study using section technique methods compared with ETAP software. Objectives to be presented in this study provide information about reliability of the Teluk Lembu substation PT. PLN Pekanbaru. By dividing the distribution networks based methods of calculating level of reliability section technique, which impacts the perceived failure of the same componet if the occurrence of the disoders that cause system outages. Step by step execution of this study include collecting data, performing calculations failure parameter, calculating the reliability index SAIDI (System Average Interruption Duration Index) and SAIFI (System Average Interruption Frequency Index). The calculate result obtained by using section technique method SAIFI = 1,745 time/hour, SAIDI = 5,34 hour/year, and CAIDI = 3,06 hour/year. With exiting standard in Indonesia as SPLN 68-2 : 1986 has values SAIFI (System Average Frequency Duration Index) is 3,2 time/hour and SAIDI (System Average Interruption Duration Index) is 21 hour/year, the index reliabilty of the distribution Feeder Surian still in the category reliable.Keywords: Section Technique, reliability, distribution system
Aspek Penerapan Wireless Sensor Network Untuk Mendeteksi Pencemaran Udara Akibat Kabut Asap Kebakaran Hutan Natanael Firnandus M; Indra Yasri
Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains Vol 3, No 2 (2016): Wisuda Oktober Tahun 2016
Publisher : Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains

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Abstract

Air pollution effect of the forest fire become one of important issues in Indonesia. Air pollution can be bad for impact community which able to eliminate the visibility when driving and also become worse for person who having respiratory problem. Therefore is needed an accurate and real-time system for monitoring the level of air pollution base on WSN. This work purposes sensor placement survey to achieve efficiency on routing protocol. The survey will focus on directed diffusion and cluster directed diffusion protocol. The reason to select this two routing protocol base on their performance indicator which cover average delay, total energy and lowest life node. All process of design will perform through Java Simulator.Keywords : Sensor Placement, Wireless Sensor Network, Directed Diffusion, Clustering, Average Delay, Efficiency Energy, Lowest Life Node.

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