Damping Factor Of Precast Concrete With Wet Connection

This research aims at determining the behaviour of structural elements of precast reinforced concrete beams which are connected with wet and dry connections. Specimen used was 30 Mpa reinforced concrete beams with 6 pieces of 8 mm diameter main reinforcement which are placed on two rollers at the joint pedestal of each end and has a rectangular cross section of prismatic 10x18 cm2. Wet connection is a connection that uses a polymer concrete material of 40 MPa with a grafting method using prepacked method. The result of the research is expected to contribute to the development of precast concrete in building construction in Indonesia. In the elastic condition, the beam monolith has the largest natural frequency of the value, but a wet connection beam has a low natural frequency value. The difference of this natural frequency value is also equal to the condition of crack and ultimate

Message from the Chief Editor

Welcome to the Second Issue of International Journal of Engineering Science and Technology Development (IJEST) on August 2013. In this issue of IJEST, we present to our readers selected articles related to Engineering, Science and Computer and Tehnology. Five papers are presented from Indonesia, Malaysia, Japan and Australia.The first article by Dr. Wamiliana from Lampung University, Indonesia and Prof. Dr. Louis Caccetta from Curtin University of Technology, Australia with the title: The Modified CW1 Algorithm For The Degree Restricted Minimum Spanning. The second article by Dr. Ibrahim, G.A., Arinal, H., from Lampung University, Indonesia and Zulhanif from National Univerisity of Malaysia, Malaysia and Haron,C.H.C from University Kebangsaan Malaysia with the title: Microstructure Alterations of Ti-6Al-4V ELI during Turning by Using Tungsten Carbide Inserts under Dry Cutting Condition. The third article by Dr. Rudi Irawan, Dr. Afzeri Tamsir and Dr. Riza Muhida from Surya University, Indonesia with the title: Indonesia’s Challenge to Combat Climate Change Using Clean Energy. The fourth article by Fritz Akhmad Nuzir, Haris Murwadi from Universitas Bandar Lampung, Indonesia and Prof. Bart Julien Dewancker from University of Kitakyushu, Japan with the title: The Importance of Education Facility as Sustainable Urban Generation Tool. The fifth article by Marzuki, Agus Sukoco, Lisa Devilia and Maria Shusanti F from Bandar Lampung University, Indonesia with the title: Analysis Web-Education Based on ISO/IEC 9126-4 for the Measurement Quality of Use.With these selections I sincerely hope that everyone has something to gain from this issue and thank you to article contributors and reviewers for making this issue possible. To all prospective author, we are welcome and please sent your article to the editors

The E-internal audit iso 9001:2008 based on accreditation form assessment matrix in study program for effectiveness of monitoring accreditation

Accreditation is one of the forms of external quality guarantee system; it is a process that used in authorized institution in giving formal recognition that an institution has an ability to do certain activity. On the preparation process there are many things have to be done by study program by using internal audit in periodic time. Internal audit is an independence activity, objectivity, and consultatively which is designed to increase the organization’s operation. This study will specifically focus on internal process audits in preparation for accreditation of Study Program of Information Engineering at Bandar Lampung University, through conducting monitoring directly that can be accessed by some units in a management system. The guidelines and standards for internal audit issued by one of several organizations ISO, the quality management system ISO 9001: 2008,  one of the requirements must be fulfilled is conducting periodic internal audits. This standard is good when applied in the preparation for the accreditation process, and accreditation assessment matrix as a guide in conducting internal audits

Indonesia’s Challenge to Combat Climate Change Using Clean Energy

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

Message from the Editor in Chief

Welcome  to the Third Issue of  International Journal of Engineering Science and Technology Development (IJEST) on December 2013.  In this issue of  IJEST, we present to our readers selected articles  related to Engineering, Science and Computer and Tehnology. Five papers are presented from  Indonesia, Malaysia and Saudi Arabia.The first article by   Abdul Aziz Ahmad and Assoc. Prof. Dr. Raihan Othman  from International Islamic University Malaysia (IIUM), Malaysia  with the title: Recent Advances in Biofuel Cell and Emerging Hybrid System. The second article by Prof. Dr. Priyo Suprobo,Faimun  and  Arie Febry from Institute Technology Surabaya (ITS), Indonesia with the title: Infrastructure Health Monitoring System (SHM) Development, a Necessity for Maintenance and Investigation  . The third article by Dr. Riza Ainul Hakim,  from King Abdulaziz University , Saudi Arabia,  with the title:  Seismic Assessment of RC Building Using Pushover Analysis  The fourth article by Ida Bagus Ilham Maliki from Universitas Bandar Lampung, Indonesia with the title: Public Transport Crisis in Bandar Lampung. The fifth article by Marzuki, Maria Shusanti F  and Andala Rama Putra  from Bandar Lampung University, Indonesia with the title: The E-Internal Audit ISO 9001:2008 Based on Accreditation Form Assessment Matrix in Study Program for Effectiveness of Monitoring Accreditation With these selections I sincerely hope that  everyone has something to gain from this issue and thank you to article contributors and reviewers for making this  issue possible. To all prospective author, we are welcome and please sent your article to the editors

Fuzzy Graphs With Equal Fuzzy Domination And Independent Domination Numbers

The basic definitions of fuzzy independent set, fuzzy dominating set,and fuzzy independent dominating sets are discussed. The aim of this paper is to find on what conditions the fuzzy graph has equal domination number and independent domination number. It is discussed briefly and also when the fuzzy graph is domination perfect is proved. Finally, the independent domination number for a connected fuzzy graph is obtained

Seismic Assessment of RC Building Using Pushover Analysis

Current research works indicated that parts of Kingdom of Saudi Arabia have low to moderate seismic regions. For structural engineers, seismic load should be considered as important aspect that needs to be included in the building design. However Major part of buildings are designed for gravity loading only and poorly detailed to accommodate lateral loads. The purpose of this paper is to investigated gravity supporting building its resistance to expected seismic loading in different regions (Makkah, Jeddah, Gizan and Haql). In this paper, a test RC building that was designed for gravity loading only is investigated. This will be accomplished by performing the nonlinear static analysis (pushover analysis) according to ATC 40. Pushover analysis produces the pushover curves, capacity spectrum, plastic hinges and performance level of the building. This analysis gives better understanding seismic performance of buildings and also traces the progression of damage or failure. The building performance level is determined by intersection of demand and capacity curves and the hinge developed in the beams and the columns. The results show that the test building is found inadequate for Haql region and it still can be considered for Makkah, Jeddah and Gizan

Microstructure Alterations of Ti-6Al-4V ELI during Turning by Using Tungsten Carbide Inserts under Dry Cutting Condition

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

Recent Advances in Biofuel Cell and Emerging Hybrid System

The present paper reviews the recent development of biofuel cell. Due to its renewable nature and milder operating conditions compared to conventional fuel cell, the electrochemical system has been extensively studied. However, major problems associated with this type of electrochemical system remain an intimidating challenge, the utmost being the low power output and stability of biocatalyst being used. Various attempts have been made to overcome these problems, some are reviewed here. The authors suggest a new direction in solving these problems by using hybrid system i.e. metal biofuel cell. The new hybrid system developed is of lower cost, less complex, higher OCV and greater power output

Analysis Web-Education Based on ISO/IEC 9126-4 for The Measurement Quality of Use

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