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INDONESIA
International Journal of Engineering Science and Technology Development (IJEST)
Published by Universitas Bandar Lampung
ISSN : 23373180     EISSN : -     DOI : -
Core Subject : Science, Engineering,
Computer Science & IT Engineering
International Journal of Engineering Science and Technology Development (IJEST), published every four month, is a carefully refereed international publication. Contributions of high technical merit are to span the breadth of science and engineering disciplines; covering the main areas of science and engineering : Engineering, Computer Science, Architecture, Mathematics and Statistics Applications, Chemistry, Physics, Biology, Geology. International Journal of Engineering Science and Technology Development (IJEST) published contributions under regular papers, invited review papers, short communications, technical notes, and letters to the editor. Book reviews, reports of and/or call for papers of conferences, symposia and meetings, and advances in research equipment could also be published in this journal with minimum charges.
Arjuna Subject : -
Articles 5 Documents
 1 
Search results for , issue "Vol 1, No 2 (2013): August" : 5 Documents clear
Indonesia’s Challenge to Combat Climate Change Using Clean Energy Rudi Irawan; Afzeri Tamsir; Riza Muhida
International Journal of Engineering Science and Technology Development (IJEST) Vol 1, No 2 (2013): August
Publisher : University of Bandar Lampung (UBL)

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Abstract

Indonesia as the biggest archipelago country and situated in equator is very vulnerable to the adverse effect of climate change. There are two main categories of efforts to handle the issues in climate change; that are how to mitigate it and how to adapt to the change. One of the main culprits of climate change is the emission of carbon gas due to fossil fuel energy utilization contributing 302 million tonnes CO2equivalent.President of the Republic of Indonesia in 2009 in the G-20 Meeting, Pittsburgh, USA, and in 2010 in COP 15 UNFCCC, Copenhagen, Denmark issued the national voluntary target to reduce greenhouse gas emission by year 2020 as much as 26% from business-as-usual by national domestic efforts. This emission reduction will further be improved as much as 41% from business-as-usual by international supports. The Government of Indonesia issued a national action plan to reduce greenhouse gases emission which is enforced by Presidential Regulation No. 61/2011. To achieve this target in energy sector,REFF-Burn (Reducing Emission from Fossil Fuel Burning) concept has been proposed by Sumiarso. Based on REFF-Burn Technology Portfolio, reducing emission from fossil-fuel burning is categorized in three different stages, which are pre-combustion, during combustion and post-combustion. In pre-combustion stage, utilization of clean energy is one of the wise choices. The perspective of the clean energy resources and utilization in Indonesia is discussed in this paper.
The Importance of Education Facility as Sustainable Urban Generation Tool Fritz Akhmad Nuzir; Haris Murwadi; Bart Julien Dewancker
International Journal of Engineering Science and Technology Development (IJEST) Vol 1, No 2 (2013): August
Publisher : University of Bandar Lampung (UBL)

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Abstract

Education value has always been a part of urban development since the age of ancient Greece, Rome, India, and China. It is recognized as the changing factor into a civilization society. Every society in the world has at least the simplest form of education which is at home. Meanwhile many others have been utilizing this value to a greater purpose of the community through the development of education facilities. One of the education facilities that contribute substantially to the development of an urban area is higher education institute or university.According the Brundtland Commission, sustainable development is development that meets the needs of the present without compromising the ability of future generations to meet their own needs. Therefore a sustainable urban generation tool is a feature that is expected to generate the development of an urban area in order to meet the definition above. Sustainable development has many criteria such as economy (growth of annual income), social (growth of public participation and awareness), and the most important, environment (growth of facility/infrastructure and ecological management). Japan as a country which has limited natural resources, has been experiencing aging population and declining on birthrate. Therefore in order to maintain its economic growth, Japan is using its science and technology advantages as its main generator. Meanwhile, it is acknowledged that science and technology are the outcomes of education process. So at the end of the day, education in Japan plays important roles in the development of the economy and the society. This paper aims to acknowledge the importance of education facility as sustainable urban generation tool by studying the development of the economy, social, and environment of the case study area which is the Kitakyushu Science Research and Park in Kitakyushu (Japan).
Analysis Web-Education Based on ISO/IEC 9126-4 for The Measurement Quality of Use . Marzuki; Agus Sukoco; Lisa Devilia; Maria Shusanti F.
International Journal of Engineering Science and Technology Development (IJEST) Vol 1, No 2 (2013): August
Publisher : University of Bandar Lampung (UBL)

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Abstract

FIK UBL Website is the website of the Faculty of Computer Science education at the University of Bandar Lampung. Domain name is www.fik.ubl.ac.id. This website is a subdomain of the University website www.ubl.ac.id. website uses ac.id as Country Code Top level domains, domain primarily UBL, and Third-level domain taken Website Hosting Server at Nusanet provider. In terms of design websites using CMS, the CMS Lokomedia. Scientific Writing will specifically focus on the analysis of UBL-based FIK website ISO / IEC 9126-4 for the use of quality measurement.In this regard, in ISO / IEC 9126-4, there are 4 metrics used to measure, among other effectiveness metrics, productivity metrics, security metrics, and Satisfaction Metrics. More specific explanation will describe in Chapter IV the author of scientific writing is about the quality of the use of UBL FIK website.
The Modified CW1 Algorithm For The Degree Restricted Minimum Spanning Tree Problem . Wamiliana; Louis Caccetta
International Journal of Engineering Science and Technology Development (IJEST) Vol 1, No 2 (2013): August
Publisher : University of Bandar Lampung (UBL)

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Abstract

Given edge weighted graph G (all weights are non-negative), The Degree Constrained Minimum Spanning Tree Problem is concerned with finding the minimum weight spanning tree T satisfying specified degree restrictions on the vertices. This problem arises naturally in communication networks where the degree of a vertex represents the number of line interfaces available at a terminal (center). The applications of the Degree Constrained Minimum Spanning Tree problems that may arise in real-life include: the design of telecommunication, transportation, and energy networks. It is also used as a subproblem in the design of networks for computer communication, transportation, sewage and plumbing. Since, apart from some trivial cases, the problem is computationally difficult (NP-complete), a number of heuristics have been proposed. In this paper we will discuss the modification of CW1 Algorithm that already proposed by Wamiliana and Caccetta (2003). The results on540 random table problems will be discussed.
Microstructure Alterations of Ti-6Al-4V ELI during Turning by Using Tungsten Carbide Inserts under Dry Cutting Condition Ibrahim G.A.; Arinal H.; . Zulhanif; Haron C.H.C.
International Journal of Engineering Science and Technology Development (IJEST) Vol 1, No 2 (2013): August
Publisher : University of Bandar Lampung (UBL)

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Abstract

Titanium alloys possesses a hexagonal close packed(h.c.p) structure, called phase to ambient temperature. Thisstructure changes to body center cubic (b.c.c), called phase tothe temperature of 882 C. Machining process that generates hightemperature during machining can affect on microstructures ofmachined surface, which represents as a quality of components.The turning parameters evaluated are cutting speed (55 - 95m/min), feed rate (0.15 - 0.35 mm/rev), depth of cut (0.10 - 0.20mm) and tool grade (uncoated, CVD and PVD). The aims of thispaper are to investigate the effects of machining process onmicrostructures of machined surface and chip were machinedusing tungsten carbide inserts under dry cutting condition. Theresults show that machining at high cutting speed (95 m/min)affected on the microstructure significantly at the end ofmachining. The temperature is the most significant factoraffected on microstructure of the machined surface and chip atshear zone. The changes of microstructure were also affected bythe tool pressure during cutting.

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