Volume 3, Issue 2, 2013

By | September 4, 2018

An Optimized PID Control Strategy For Active Suspensions Applied To A Half Car Model

Mohammed H. AbuShaban, Mahir B. Sabra, Iyad M. Abuhadrous
Electrical Engineering Department, Islamic University of Gaza, Palestine.

Abstract— In this paper, we propose a new control strategy for the active control of a hydraulically controlled half-car active suspension system. Our study proposes a special construction of the suspension system where the hydraulic actuator is to be placed in series with the conventional passive one to form a special case of low- frequency active suspension. The full dynamics of the electro-hydraulic servo-valve and hydraulic actuator were employed. Response of proposed control strategy has been tested for different road profiles and riding conditions including car chassis rolling effect when cornering and pitch movements when braking/ acceleration. Results have shown superior performance of our modified controller over passive suspensions and many other controllers of previous studies. Simulations show that our proposed controller provide better passenger comfort as it lowers maximum body acceleration by 94.3% and with reduction in body travel by 98.8% of that of passive one. Also, our proposed control strategy has shown better road handling and car stability over a whole range of road and inertial disturbances.

Keywords- Half-car active suspension; Electro-hydraulic servo actuator; PID control ; Optimization.

Effect of Social Media on Website Popularity: Differences between Public and Private Universities in Indonesia

Hanum Putri Permatasari, Silvia Harlena, Reza Chandra
Department of Information System, Gunadarma University, Indonesia.
Donny Erlangga, Department of Informatics Management, Gunadarma University, Indonesia.

Abstract— ISocial media has become something that is important to enhance social networking and sharing of information through the website. Social media have not only changed social networking, they provide a valuable tool for social organization, activism, political, healthcare and even academic relations in the university. The researchers conducted present study with objectives to a). examine the academic use of social media by universities, b). measure the popularity and visibility of social media owned by universities. This study was delimited to the universities in Indonesia. The population of the study consisted both on public and private universities. The sample size comprised totally of 264 universities that their ranks included both in Webometrics and 4ICU in July 2012 edition. The social media which was examined included Facebook, Twitter, Flicker, LinkedIn, Youtube, Wikipeda, Blogs, social network community owned by the university and Open Course Ware. This study used an approach for data collection and measurement: by using Alexa and Majestic SEO. Data analysis using the Pearson Chi-square for social media ownership that using data ordinal and independent t test for examining effects of social media on website popularity. The study revealed that majority of the social media users used Facebook, then followed by Twitter. There are also most significant differences for result of popularity by Alexa Rank and visibility by Majestic SEO in universities whether used social media or no.

Keywords- social media; university; Indonesia; popularity; visibility.

Cloud Computing in Higher Education in Jordan

Samah A. Massadeh, Muhammad A. Mesleh
Department of computer engineering, Faculty of Engineering Technology, Jordan.

Abstract— With the high budget cuts in higher education in Jordanian universities and with the growing demand for information technology (IT) services Jordanian Universities should consider adopting cloud computing strategies to meet with this growing demand on different IT services and the budget cuts, Cloud computing could offer good business models for Jordanian universities since these universities often do not have enough resources and knowledge to manage the necessary information technology (IT) support for educational, research and development activities that must be provided in a higher education environment, while cloud computing aims to eliminate these complexities from the user.This paper describes the importance and the challenges facing higher education in Jordan, introduction to cloud computing technologies, services and deployment models, reasons for the rise of cloud computing in higher education as a possible solution for the challenges facing higher education in Jordan, a proposed model for universities using Cloud computing technology in Jordan and the possible challenges that could face the proposed model.

Keywords- Cloud Computing; Higher Education; Jordan; Cloud Computing Services; Cloud Computing Challenges.

Mobile Application for Diabetes Risk Diagnosis and Information Based on Android

Remi Senjaya, Anindito Yoga Pratama
Department of Informatics Engineering, Faculty of Technology Industry, Gunadarma University, Indonesia.
Dewi Agushinta R., Department of Information System, Faculty of Computer Science & Information Technology, Gunadarma University, Indonesia.

Abstract— Mobile telecommunications technology, called mobile phone is in great public demand. Technological developments especially in the field of mobile telecommunications are occurring very rapidly due to quick and easy communication and information exchange need. The objective of this research is developing the Diabetes Risk Application (which is) implemented on Android Smartphone. The research methods are data collection, system requirements analysis, application design, implementation and testing. This application was built in Java programming language that uses Android SDK. Testing application conducted with the aim to show that this application based on Android has successfully developed. Users can use this application to know the level of diabetes risk themselves. The results of application testing done showed that this application has been successfully developed.

Keywords-Android; Diabetes Risk; Diagnosis; Health; Information.

Analysis on Backlinks and PageRank of Automotive Company Websites Using Crawler Tool

Dina Agusten, ST., MMSI ,Department of Informatics Engineering, Gunadarma University, Indonesia.
Winarti, SKom., MMSI, Department of Information System, Gunadarma University, Indonesia.

Abstract— The marketing strategy for a company is very important for gaining higher sale over time. Many companies utilized the Internet to develop marketing strategies, amongst which was a website that represent the company image. To attract as many visitors as possible, the website required optimization of its backlink/s and pagerank. How good the backlinks and how high the pagerank can be tested using a webcrawler. By using this tool, the company can improve its marketing strategy worldwide. This study gives result a backlink and pagerank information based on experiments done on the tool crawler. So that the company knows its position in web search site. Company makes better marketing strategies in the use of internet based on this study.

Keywords- component; tool crawler; analysis URL address; backlink; pagerank.

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