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TEKNIK

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Published by Universitas Diponegoro

ISSN : 08521697 EISSN : 24609919 DOI : -

Core Subject : Engineering,

Engineering

Journal yang mempublikasikan artikel-artikel ilmiah dari berbagai disiplin ilmu rekayasa/keteknikan. Artikel-artikel yang dipublikasikan di Jurnal TEKNIK meliputi hasil-hasil penelitian ilmiah asli (prioritas utama), artikel ulasan ilmiah yang bersifat baru (tidak prioritas), atau komentar atau kritik terhadap tulisan ilmiah yang dipublikasikan oleh Jurnal TEKNIK.

Arjuna Subject : -

Articles 522 Documents

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Pengaruh Activity Support terhadap Kualitas Visual Koridor Jalan K.H. Agus Salim Semarang Hasanah, Iswatun; Setioko, Bambang; Setyowati, Erni
TEKNIK Vol 35, No 2 (2014): (Desember 2014)
Publisher : Diponegoro University

Koridor Jalan K.H. Agus Salim merupakan koridor komersial yang cukup ramai yang berada di Wilayah Kecamatan Semarang Tengah di Kota Semarang. Pada koridor jalan ini terdapat beberapa bangunan yang menjadi magnet pemicu aktivitas-aktivitas yang bermunculan atau disebut activity support di sepanjang jalan ini. Sebagian ruang di koridor Jalan K.H. Agus Salim Semarang dipenuhi oleh activity support berupa pedagang kaki lima dan beberapa pangkalan becak. Ibaratnya sebuah generator, Jalan K.H. Agus Salim menjadi akses termudah bagi perkembangan aktivitas tersebut. Dengan demikian diduga activity support yang berada di sepanjang koridor Jalan K.H. Agus Salim ini berpengaruh pada kualitas visualnya. Untuk mengetahui pengaruh tersebut, maka penelitian ini menggunakan metode kuantitatif rasionalistik. Metode pengumpulan data berupa studi literatur, observasi lapangan, wawancara, dan kuisioner. Metode analisis data yang digunakan berupa analisis statistik dengan uji regresi menggunakan program SPSS 21.0 for Windows. Hasil dari penelitian ini menunjukkan adanya pengaruh antara activity support terhadap kualitas visual koridor jalan.[Influence of Activity Support towards Visual Quality of KH. Agus Salim Semarang Road Corridor] Road corridor of K.H. Agus Salim is a quite crowded commercial corridor which is located in the Regional District of Central Semarang City. On this road corridor, there are several buildings that make magnets trigger for emerging activities or also known as activity support along this road. The majority space on the road corridor is fullfilled with activity support in the form of street vendors and rickshaw bases. It is like a generator, road K.H. Agus Salim become the easiest access to the development of the activity. Thus, it is supposed that activity support along the road corridor of KH Agus Salim effect on the visual quality. To determine the effects, this research used quantitative rationalistic methods. Methods of data collection are literature study, field observations, interview and questionnaires. Method of data analysis using statistical analysis by regression test using program SPSS for Windows 21.0. The results of this study found out there were some influences of the activity support to the visual quality of the road corridor.Copyright (c) 2014 by Fakultas Teknin, Undip. All right reserved.

MODEL PENDANAAN ARMADA KAPAL NASIONAL FUNDING MODEL of NATIONAL SHIP ARMADA Ridwan, Mohd
TEKNIK Volume 29, Nomor 2, Tahun 2008
Publisher : Diponegoro University

Domination of Foreign ship armada in trading activity of exsport/import and interisland in Indonesia,couse deficit state 99 trilium rupiah per year. The national shipping armada can not serve sea transportto support commercial activity. They have not provides enough ship armada capacity for tradingcommodity, and dosent enaugh funding development of new ship armada, so that national armada freightcapacity always downwards along increasingly ship age. Economic from transportation sector of seawhich capital intensive, labour intensive and high tech, requires a policy of government which insubvention with funding especially from banking sector and finance companies non bank. It is requiredmodel or funding pattern which to support the sector, expected later national ship armada can transportall commerce commodity of exsport/import and interisland in country

Back-matter and Author Guidelines Istadi, Istadi
TEKNIK Vol 36, No 1 (2015): (Juli 2015)
Publisher : Diponegoro University

KAJIAN GEOLOGI LINGKUNGAN PADA LOKASI PENAMBANGAN BATUAN DIABAS GUNUNG PARANG DALAM RANGKA KONSERVASI BATUAN DI CAGAR ALAM GEOLOGI KARANGSAMBUNG Mustofa Nur, Arief
TEKNIK Volume 32, Nomor 2, Tahun 2011
Publisher : Diponegoro University

Diabas Parang hill is one of location which conservated in area conservation of geological Karangsambung.Now, it is threatened, because there are many mines at surrounding it. Activities of mining not care science andenvironmental conservation.Impact of mining so cause change of topography/morphology, slope become more steep, and mining locationbecome potentially accure rock fall and landslide. Pursuant to result of laboratory analysis, engineeringproperties diabas Parang hill strongless than andesit so it is only fulfil for trotoir.For diabas conservation which is protected so need affort to stop activity of mining. The effort can do seekingaltenative location for mine and/or to change mine activities.

EVALUASI KELAYAKAN PENDANAAN PROYEK DENGAN TEKNIK PEMROGRAMAN LINIER Partono, Windu
TEKNIK Volume 28, Nomor 1, Tahun 2007
Publisher : Diponegoro University

One main problem characterizes linear programming is to seek the maximum or minimum of a linearexpression when the variables of the problem are subject to restrictions in the form of certain linearequalities or inequalities. Problems of this kind are encountered when we have to exploit limitedresources in an optimal way. Project Cost Evaluation which play an important role in project are ofspecial significance in this respect. The real problem of Project Cost Evaluation analysis are tomanipulate cash flow problems of project into linear programming model or mathematical model.This method should be selected technically according the actual condition of the project. In designingand selecting the mathematical models, it is necessary to take into consideration the relationshipbetween the limited resources (money) and the optimal solution.

Kajian Kerentanan Ekosistem Pesisir Kabupaten Demak Berdasar Perubahan Garis Pantai dengan Teknologi Penginderaan Jauh dan Sistem Informasi Geografis Sasmito, Bandi; Suprayogi, Andri
TEKNIK Vol 38, No 1 (2017): (Juli 2017)
Publisher : Diponegoro University

Pesisir dan pantai Kabupaten Demak terdapat beragam ekosistem seperti mangrove, ikan, terumbu karang, burung pemakan ikan, udang, dan sebagainya. Sedangkan garis pantai di Kabupaten Demak mengalami perubahan yang disebabkan oleh proses abrasi dan akresi yang terpicu karena aktivitas manusia yang intensif di wilayah pesisir. Abrasi dan akresi yang terjadi dirasa mengancam keberagaman ekosistem, sehingga perlu dilakukannya perlindungan dan pelestarian kawasan pesisir dan pantai. Penelitian ini menggunakan metode berupa penggabungan teknologi Penginderaan Jauh dan Sistem Iinformasi Geografis (SIG) untuk mengukur kerentanan wilayah pesisir dengan memanfaatkan klasifikasi kerentanan pesisir dari Environmental Sensitivity Index (ESI) Maps serta perhitungan laju perubahan garis pantai menggunakan perangkat lunak Digital Shoreline Analysis System (DSAS). Hasil yang diharapkan dari penelitian ini adalah 1. Deteksi perubahan garis pantai di Kabupaten Demak dalam kurun waktu 5 (lima) tahun terakhir (2011-2015), 2. Pemodelan trend perubahan garis pantai 5 (lima) tahun kedepan (2016-2020), dan 3. Deteksi ekosistem pesisir Kabuaten Demak mana saja yang terdampak akibat perubahan garis pantai 5 tahun terakhir (2011-2015), dan trend 5 tahun kedepan (2016-2020).

ANALISIS FAKTOR INTENSITAS TEGANGAN (SIF) DENGAN VARIASI PANJANG RETAK PADA PELAT GELADAK UTAMA KAPAL â€œ MT. KLAWOTONG â€œ DENGAN MENGGUNAKAN METODE ELEMEN HINGGA (FEM) Kiryanto, Kiryanto
TEKNIK Volume 31, Nomor 1, Tahun 2010
Publisher : Diponegoro University

Crack defect on main deck plate is source of failure ship structure. Small intensity of crack in the future canbe to large influence lateral force and bending moment. Crack defect characteristics can be to know shearintensity factor (SIF) on main deck is used mathematics simulation model based on fracture mechanics (FM)and finite element method (FEM). Goal of this research know characteristics main deck plate get a crack withload forces while deck plate start is loading until to crack propagation good stability.The MT Klawotong is chose in this research . Main deck plate is location as the sample. It is number 3 oncargo oil. Any analysis of data that is to counting of profile constructions, length strength, modeling withANSYS Version 9.0 and counting of shear intensity factor (SIF).Research on this structure failure result any substance that is, Sagging condition plate shears 50.34 MPa withsafety factor 8,939 crack long maximum is 0.02 m, value of shear intensity factor (SIF) KI WD. Pilkey = 12.615MPa m , KII WD. Pilkey = 0 MPa m , KI ANSYS = 13.,451 MPa m , KII ANSYS = 0.693 MPa m . Prosentaso oferror counting programe KI = 0.062 %, KII = 1% . The ather hand Hoging condition plate shears 15.08 MPawith safety factor 29.841 crack long maximum is 0 .3 m , value of shear intensity factor (SIF) KI WD. Pilkey=14.,645 MPa m , KII WD. Pilkey = 0 MPa m , KI ANSYS = 15.585 MPa m , KII ANSYS = 0.352 MPa m ,Prosentaso of error counting programe KI = 0.062 %, KII = 1%.

POTENSI MIKROALGA SEBAGAI SUMBER BIOMASA DAN PENGEMBANGAN PRODUK TURUNANNYA Noer, Abyor Handayani; Dessy, Ariyanti
TEKNIK Volume 33, Nomor 2, Tahun 2012
Publisher : Diponegoro University

The first use of microalgae by humans as food detected in the dates back 2000 years, but the development ofbiotechnology of microalgae just began in the middle of this century. Microalgae refer to biomass resourcecontain many useful components such as protein, carbohydrate, fatty acid, etc. Products based microalgae arediverse from human food and nutrition, animal feed and nutrition up to fine chemicals such as triglycerideswhich is able to be converted to biodiesel. Microalgae is a promising biomass resources, (i) microalgae isrenewable resources which has high biodiversity properties, (ii) production cost of converting process frommicroalgae biomass into its derivatives relatively low, (iii) product derivatives of microalgae have a highdemand in market. Based on above, microalgae can be developed further to be applied as raw material for food,energy and pharmacy. This paper described microalgae in general and the developing technology used toproduce commercial microalgae based product.

BENDING OF REINFORCING BARS TESTING METHOD AND INFLUENCE ON STRUCTURES Warsianto, Hari; Narayudha, Moga
TEKNIK Volume 30, Nomor 2, Tahun 2009
Publisher : Diponegoro University

Reinforcing bars in concrete elements functions as the component carrying tensile stresses after concretecracking. This is due to that fact that concrete exhibit very high compression strength combined with avery low tensile capacity. The tensile stressed are transferred to the bars by the bond between thereinforcement and the concrete.Bars are generally produced in strands 6 to 12 meter in length so that bending for transportation andhandling purposes becomes necessary. At the site bars are straightened, and then sometimes re-bent forassembling purposes. This process will result in a loading and re-loading of steel.The ASTM E-290 mandated that bars have to pass the bending test, whereas reinforcing steel bars arebend to almost 1800 to ensure material ductility. In the past five years the Construction and MaterialLaboratory, Diponegoro University has been questioned with the issue as to how far this bending andstraightening influences the quality and what the significance of testing is.This paper will evaluate theinfluence of bending and straightening and the testing procedure involved.

KORELASI PENURUNAN MUKA TANAH DENGAN PENURUNAN MUKA AIR TANAH DI KOTA SEMARANG Yuwono, Bambang Darmo
TEKNIK Volume 34, Nomor 3, Tahun 2013
Publisher : Diponegoro University

The characteristics of the pattern of land subsidence need to be mapped for the purposes of planning and structuring the city as well as taking appropriate actions in anticipating and mitigating the impact. These characteristics can be determined by combining the land subsidence measurements done with various methods such as levelling, GPS, direct measurement and InSAR. Land subsidence that occurred in Semarang had a rate that varied between 0 - 13 cm / year with an increasing trend towards the north east (northeast) of Semarang. The areas which had a high rate of land subsidence between 9 -13 cm / year included PRPP, Tanjungmas, Terboyo and Kaligawe. In this paper will show spatial distribution of landsubsidence which have identical patternÂ with the change of ground water level .Observations GPS method has a high correlation with changes in ground water level reaches 0.956 compared with InSAR observations, GPS, direct observation

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