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MEKTEK
Published by Universitas Tadulako
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Articles 145 Documents
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IMPLEMENTASI ALGORITMA PRIM PADA JARINGAN DISTRIBUSI LISTRIK PRIMER DENGAN MENGGUNAKAN PROGRAM BERBASIS GIS Nugraha, Deny Wiria
MEKTEK Vol 13, No 2 (2011)
Publisher : MEKTEK

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Abstract

Optimization problem is the demanding problem for optimum solutions. The optimum (best) solution is asolution with minimum values, or maximum among a set of possible alternative solutions. In electricaldistribution network, problem of demanding achievement of optimum condition of system operationalperformance is essential. One of the factors necessary to consider in the designing of the primary electricaldistribution network is cost. Cost is closely related to length of cable used. It highlights the importance ofcalculating the minimum length of cable required in a network. The cable should be not only with as minimalas possible in length, but also regulated for better arrangement.Actually, in regulating the cable installation, longer path is more frequently selected. One of the ways ofachieving optimization condition is to use algorithm to determine a minimum spanning tree of the primaryelectrical distribution network system. In this study, the algorithm used is Prim’s algorithm.The research was conducted by designing a graph model of primary electrical distribution network inappropriate with the data obtained. Based on the graph, each was weighted for distance or length of networkcable by using the ArcView GIS 3.3. The data were then calculated and simulated by using computer to gaina minimum spanning tree of the primary electrical distribution network using the Prim’s algorithm
STUDI PEMANFAATAN PASIR LAUT SEBAGAI AGREGAT HALUS PADA CAMPURAN BETON ASPAL Ramlan, Ratnasari; Pradhani, Novita
MEKTEK Vol 10, No 1 (2008)
Publisher : MEKTEK

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Abstract

The purpose of this Research is to know sand quality and exploiting go out to sea as smooth aggregate for a concrete mixture asphalt. Where to determine made by optimum asphalt content 5 object test with asphalt rate variation, that are 5%, 5,5%, 6%, 6,5% and 7%. After obtaining optimum asphalt content value that is 6,4% hereinafter will be made by object test by using optimum asphalt rate. Sand condition to be used by is the condition of sea sand influenced by up and down of water sea, condition of sea sand which do not influenced by up and down of water sea, Sand condition influenced by up and down of water sea which have washed out. For three conditions of the sand tested by Marshall (measuring tool) with time variation of submersion that is 30 minutes, 1 hour, 3 hours, 5 hours and 24 hours. The obtained data is the condition of sea sand that influenced by up and down of sea, do not fulfill the specification of discharge, where sand discharge go out to sea above 4,5 mm.
PENENTUAN ELEVASI PERMUKAAN AIR BERDASARKAN DATA SERIES TINGGI TEKANAN AIR Rusdin, Andi
MEKTEK Vol 13, No 2 (2011)
Publisher : MEKTEK

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Abstract

Series data of sea surface elevation is required to determine the parameters of tidal and wave parameters.The series data on sea water surface is irregular waves which are a superposition of several regular waves.Therefore, water surface parameters are usually based on statistical parameters. Statistical parameter ofwater surface can be obtained by performing frequency analysis on data series of water surface elevationobtained by field measurements. The water surface elevation can be also determined by converting dataseries of water pressure obtained by pressure sensors. In this paper, the water surface elevation that has asmall oscillation period is calculated based on two methods i.e. method of linear wave theory and methodTransform Fast Fourier (FFT). The water surface elevation that is calculated by using linear wave theorymethod is converted directly from data series of water pressure that consists of hydrostatic pressure anddynamic pressure. FFT method has two steps to convert water pressure to become water surface elevation.First of all data series of water pressure is fragmented into several regular waves based on their frequencies.Secondly, In order to reduce errors, water level fluctuations with high frequencies are removed from the databased on the maximum frequency that can be recorded by the measuring instrument. The maximumfrequency is determined by applying a deep-sea conditions and the depth position of the pressure sensor.Data used in the calculation is data from LIP11D experiments conducted at Delft LIP11D Hydraulic. Threedata sets of water pressure were used to compare the water surface elevation of direct measurements withtwo water pressure conversion results using linear wave theory and the FFT method. Results of analysisshow that the water surface elevation obtained by the FFT method gives good results when compared withthe results of direct measurements
PENGARUH PENGGUNAAN SERBUK ARANG TEMPURUNG KELAPA DAN VARIASI JUMLAH TUMBUKAN TERHADAP KARAKTERISTIK CAMPURAN BETON ASPAL Mashuri, Mashuri
MEKTEK Vol 10, No 1 (2008)
Publisher : MEKTEK

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Abstract

Using of charcoal dust of coconut shell in asphalt concrete mixture has been researched with some variations of number of blow to characteristic of asphalt concrete mixture type III.The aim of this research is to know characteristic of asphalt concrete mixture of type III which using charcoal dust of coconut shell with vary number of blow.Scenarios of variation of number of blow were twice of 75, twice of 100, twice of 200, and twice of 250 of blows. Scenarious of variation of charcoal dust of coconut shell content were 0%, 2%, 4%, 6% and 8%.Results of research showed that performance of stability, flow and durability of asphalt concrete mixture type III increase at using 2 % of charcoal dust of coconut shell with twice of 75 of blows. The more number of blows at asphalt concrete mixture of type III, tend to increase MQ value of asphalt concrete mixture for both with or without charcoal dust of coconut shell; which meant asphalt more stiff and tend to brittle, which it finally crash easily. The more number of blows and the higher percentage of charcoal dust of coconut shell in making specimen can decrease characteristic of durability of asphalt concrete.
MAN-MACHINE INTERFACE (MMI) CLIENT_SERVER UNTUK PENGATURAN POSISI MOTOR SERVO Anshori, Yusuf
MEKTEK Vol 13, No 3 (2011)
Publisher : MEKTEK

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Abstract

In the automatic control of the process manufacturing industry contributed greatly due to the dynamicalsystem setup proved to give good performance such as increasing the quality and pace of the productionprocess, reduce production costs and minimize the tedious routine work to be done by humans. MMI (Man-Macchine Interface) is a system consisting of information and communication technology device that servesas a liaison between people and machines that run a complex industrial process. MMI hardware architecturethat is built consisting of client, server, microcontroller, motor drivers and servo drive. Communication thatoccurs is a two-way communication so that the servo motor can be controlled and monitored the movementand position by the server and client
PENGARUH TEMPERATUR DAN BENTUK TAKIKAN TERHADAP KEKUATAN IMPAK LOGAM Zuchry M, Muhammad
MEKTEK Vol 14, No 1 (2012)
Publisher : MEKTEK

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Abstract

The ability of a material in its use can be influenced by various factors including the temperature. The lower the temperature of the material will be more brittle and conversely the higher the temperature the material will be more resilient, and toughness will also be affected by the presence of defects in material such as cracks, corrosion, holes, etc. and. Impact test is one way to analyze and know the mechanical properties of the material, and the impact test will be the extent to which teperatur and can affect the notch toughness and ductility of the material. It is important to be  can know how a material will be feasible or not to be used
ANALISIS DAYA DUKUNG TANAH PONDASI DANGKAL DENGAN BEBERAPA METODE Martini, Martini
MEKTEK Vol 11, No 2 (2009)
Publisher : MEKTEK

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Abstract

This analysis aim to obtain variation of bearing capacity of soil foundation for the same case based on methods is Terzaghi, Meyerhof, Vesic, Hansen and Ohsaki. And gets comparison of bearing capacity value from some the methods.Method Terzaghi and Ohsaki to have bearing capacity value of soil foundation which approximately equal. Method Hansen and Vesic also has value tending to same, only Meyerhof having different value x'self. For incline load, method Hansen, Vesic is tnding to same and just Meyerhof tending to value differs in. But method Hansen and Vesic at various foundation breadth ( B) at foundation square and circular that is B > 0,5 m happened decrease of bearing capacity of soil foundation and at B ≥ 1,5 m increases returns to its the value.
KALIBRASI PARAMETER MODEL HEC-HMS UNTUK MENGHITUNG ALIRAN BANJIR DAS BENGKULU Tunas, Gede
MEKTEK Vol 7, No 1 (2005)
Publisher : MEKTEK

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Abstract

HEC-HMS is an hydrology model  for use in analyzing a watershed system in order to predict the hydrologic response of the system to a user defined rainfall event. To obtain the optimal parameter value, HEC-HMS model must be calibrated by adjusting model parameter values until  model results match historical data. This research would try to calibrate HEC-HMS parameter model in Bengkulu Hulu Watershed. Parameter values are adjusted by the search methods and the hydrograph and objective function for the target element are recomputed. The result of simulation shows that the optimal parameter value for several optimization which stated by function value have 5.8 % error (RMS error type)
JARINGAN TEKNOLOGI FATMA PADA SISTEM KOMUNIKASI SATELIT PERMINYAKAN (SKSP) PERTAMINA UPPDN VII MAKASSAR Amir, Ardi
MEKTEK Vol 14, No 2 (2012)
Publisher : MEKTEK

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Abstract

FATMA Technology (Frequency And Time Multiple Access) is a form of progress of FDMA and TDMA are combined into one in which on one network can use up to 32 carrier frequencies (frequency division), and on each carrier should ideally be occupied by 32 nodes / stations simultaneously (time division).Technology in Indonesia Fatma access methods specifically used by Pertamina Oil Satellite Communication System (SKSP) in order to better communication between and among all units of the existing branches. In this study conducted an analysis of a network using the system point to point communication link between one point with another point of direct and multi-point systems and communication links with the mesh provided by ACT-ONE modem that uses Fatma. The pattern of relationships / mesh topology is that each station can be connected directly by using a single hop.Selain was also described on network analysis.
ANALISIS PERBANDINGAN PENGUJIAN LENTUR BALOK TAMPANG PERSEGI SECARA EKSPERIMENTAL DI LABORATORIUM DENGAN PROGRAM RESPONSE 2000 Amir, Fatmawati
MEKTEK Vol 12, No 3 (2010)
Publisher : MEKTEK

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Abstract

General, rectangular beam construct to take flexural and shear force. Flexural test can visualitation in thelaboratorium if there are tools like loading frame, load cell, hydraulic jack and data logger. This researchgive alternative conclusion for flexural test used Response-2000 programme, beside the test result.Response-2000 was one programme used to analyse beam and column with combination load cause axialforce, moment and shear force. This method can used to know the behavior of rectangular beam based onlayer method and produce load-bending response, shear force, axial load, moment-curvature, and strainmomentdiagram to know ductility and strength of beam

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