Articles

Access the latest knowledge in applied science, electrical engineering, computer science and information technology, education, and health.

Advanced Search
Filter Icon

Filters article

Years

FAQ Arrow
Single Year
Range Year
0
0

Source Title

FAQ Arrow

Authors

FAQ Arrow

28,451 Article Results

Problem Based Learning in Cooperative Situation (PBLCS) and Its Impact on Development of Personal Intelligence

https://ijere.iaescore.com/index.php/IJERE/article/view/4483
Ahmad Talib , Ismail bin Kailani
The objective of this study was focused on the observation on the practice of PBLCS learning model, and its impact on the development of personal intelligence (interpersonal and intrapersonal) students. This study used a quasi-experimental design with one factor measurement. The study population was students of class XI, IPA (Natural Science) SMAN (Senior High School) 22 in Makassar City, including 6 top schools and 16 regular schools, in the second semester in the period 2012/2013. The sample of this study included both one top school and two regular schools using a random sampling technique. Based on the sample selection technique, two classes were selected from the top school; SMAN 1 and two classes from regular classes; SMAN 4, and SMAN 18, involving 103 students for PBLCS and 103 students for PT (traditional class). Data of this study were analyzed inferentially and descriptively, inferential analysis using multivariate statistic and a multivariate analysis using variance or one-way MANOVA. The results of this study showed that the implementation of PBLCS model (treated class) was better than the PT strategy (controlled class) in developing personal intelligence of students, with the significance 0.000 <α = 0.05. It was supported by descriptive data indicating that the mean score of personal intelligence development. Both interpersonal and intrapersonal intelligence of students in the treated class was higher than the development of interpersonal or intrapersonal intelligence students in the controlled class.DOI: http://dx.doi.org/10.11591/ijere.v3i4.6969
Volume: 3
Issue: 4
Page: 236-244
Publish at: 2014-12-01

A LQR Optimal Method to Control the Position of an Overhead Crane

10.11591/ijra.v3i4.pp252-258
J. Jafari , M. Ghazal , M. Nazemizadeh
In this paper, a LQR (Linear Quadratic Regulation) optimal method is implemented to control position of an overhead carne. To do this, a tracking formulation of LQR is developed and applied to the system. Hence the dynamic model of the overhead crane is presented, the dynamic of the actuator motor of the trolley is considered. As the parameters of the optimal controller assigned, some simulations are done to show the efficiency of the proposed method.
Volume: 3
Issue: 4
Page: 252-258
Publish at: 2014-12-01

Study on Smart Grid System Based on System Dynamics

https://ijeecs.iaescore.com/index.php/IJEECS/article/view/3908
Cui He-Rui , Xu Peng
Smart Grid is a large complex system, involving generation, transmission, distribution and delivery of four links. This paper analyzes the structure of the smart grid system in depth with a combination of qualitative and quantitative research approach. Then it explains state variables, rate variables and constants in the development of smart grid system under the Vensim software environment and analyzes subsystems causal feedback relationship in a macro point of view. Finally, this paper analyzes the simulation on the amount of funding and professionals in the smart grid system dynamics flow diagram after inputting DYNAMO language equations. The simulation analysis shows that the development of the smart grid should focus on training professionals. Professional talent is a source of strength in the smart grid development. At the same time, we should also pay attention to industrial policy related to the smart grid and seek break under the guidance of policy. http://dx.doi.org/10.11591/telkomnika.v12i12.5986 
Volume: 12
Issue: 12
Page: 7979-7986
Publish at: 2014-12-01

A mini-UAV VTOL Platform for Surveying Applications

10.11591/ijra.v3i4.pp259-267
Kuldeep Rawat , Ellis Lawrence
In this paper we discuss implementation of a mini-Unmanned Aerial Vehicle (UAV) vertical take-off and landing (VTOL) platform for surveying activities related to highway construction. Recent advances in sensor and communication technologies have allowed scaling sizes of unmanned aerial platforms, and explore them for tasks that are economical and safe over populated or inhabited areas. In highway construction the capability of mini-UAVs to survey in hostile and/or hardly accessible areas can greatly reduce human risks. The project focused on developing a cost effective, remotely controlled, fuel powered mini-UAV VTOL (helicopter) platform with certain payload capacity and configuration and demonstrated its use in surveying and monitoring activities required for highway planning and construction. With an on-board flight recorder global positioning system (GPS) device, memory storage card, telemetry, inertial navigation sensors, and a video camera the mini-UAV can record flying coordinates and relay live video images to a remote ground receiver and surveyor. After all necessary integration and flight tests were done the mini-UAV helicopter was tested to operate and relay video from the areas where construction was underway. The mini-UAV can provide a platform for a range of sensors and instruments that directly support the operational requirements of transportation sector.
Volume: 3
Issue: 4
Page: 259-267
Publish at: 2014-12-01

Dynamic Behavior of a SCARA Robot by using N-E Method for a Straight Line and Simulation of Motion by using Solidworks and Verification by Matlab/Simulink

10.11591/ijra.v3i4.pp221-233
Fernini Brahim , Mustapha Temmar
SCARA (Selective Compliant Assembly Robot Arm) robot of serial architecture is widely used in assembly operations and operations "pick-place", it has been shown that use of robots improves the accuracy of assembly, and saves assembly time and cost as well. The most important condition for the choice of this kind of robot is the dynamic behavior for a given path, no closed solution for the dynamics of this important robot has been reported. This paper presents the study of the kinematics (forward and inverse) by using D-H notation and the dynamics of SCARA robot by using N-E methods. A computer code is developed for trajectory generation by using inverse kinematics, and calculates the variations of the torques of the links for a straight line (path rest to rest) between two positions for operation "pick-place". SCARA robot is constructed to achieve “pick-place» operation using SolidWorks software. And verification by Matlab/Simulink. The results of simulations were discussed. An agreement between the two softwares is certainly obtained herein
Volume: 3
Issue: 4
Page: 221-233
Publish at: 2014-12-01

A New Image Encryption Algorithm Based on Two-dimensional Coupled Chaotic Map

10.11591/ijeecs.v12.i12.pp8229-8237
Li Tu , Liyuan Jia , Chi Zhang , Saiqiu Guo
In this paper, a kind of two-dimensional coupled chaotic transcendental map (TCCTM) was proposed. Firstly, by using the TCCTM chaotic sequences were generated,then the chaotic sequences were modified to generate chaotic key stream that is more suitable for image encryption. In the process of encryption， an original color image was decomposed into three images of red, green and blue components, and encrypted them in a different way respectively.  The experimental results demonstrate that the extremely sensitive to the key, the encrypted image has random-like distribution behavior of grey values, the adjacent pixels have zero co-correlation properties. Furthermore, the algorithm shows the advantages of large key space and high speed of encryption.
Volume: 12
Issue: 12
Page: 8229-8237
Publish at: 2014-12-01

Violence and National History Teaching (1948 – 2006): An Institutional Colombian Perspective

https://ijere.iaescore.com/index.php/IJERE/article/view/4481
Maria Isabel Cristina González
It is possible to track multiple state reforms to secondary education in terms of curricula and syllabus throughout the second half of the twentieth century in Colombia. Underlying each reform, one can identify a rationality that surpasses the logic of Education, and is rather intertwined with the political project and ideological requirements of the government in office, or with certain socio-political junctures. The impact of the political world on education is particularly noticeable in school subjects that address National History. Within this perspective it is shown how, after institutional changes have occurred, different memories and visions about citizenship, democracy, conflict and nation are being promoted. This highlights different ways of subordination of the educational project to a wide universe of political dynamics.DOI: http://dx.doi.org/10.11591/ijere.v3i4.6795
Volume: 3
Issue: 4
Page: 218-227
Publish at: 2014-12-01

Reorganization of intruder Using Ad-Hoc Network And RFID

10.11591/ijra.v3i4.pp268-271
Vishakha Hagawane , Anukriti Anup Shrivastav , Kartiki Tambekar
This system is to develop a centralized computer application that needs to identify moving person in a specific area using wireless network. In this paper, we develop a new indoor tracking algorithm using received signal strength. The RFID is able to detect the humans and provide information about the direction of the movement. The gathered information from the node is to be given to the base station for processing. . This application is able to detect and track person, and report direction of the intruder to a central base station. In this system we design nodes through which we are able to track the person. The human intruder is detected using Zigbee.
Volume: 3
Issue: 4
Page: 268-271
Publish at: 2014-12-01

Student Motivation and Learning Strategies of Students from USA, China and Bangladesh

https://ijere.iaescore.com/index.php/IJERE/article/view/4479
Quamrul H Mazumder
To better understand the motivation and strategies used by students around the world, a comparative study among three different countries was performed.The current study used the Motivated Strategies for Learning Questionnaire (MSLQ) questionnaire to collect responses from students in public and private universities of Bangladesh.The results were also used to compare the differences between public and private universities of Bangladesh, as there is a national debate on the quality of these two types of universities in Bangladesh.The number of students that participated in this study was 164 with 143 from private universities and 21 from public universities. The number of lower responses from public universities may be an indicator of their lack of motivation to participate in this study. MSLQ questionnaires have been used and adapted by universities across the world as a valid instrument to measure the level of motivation and the learning process.The survey consists of 18 questions to evaluate motivation and learning strategies. The results of the responses from Bangladesh were compared with a previous study between students of USA and China [9].There was no significant difference between public and private universities in Bangladesh in most of the categories.However, some differences were observed among these three countries indicating that students from different geographical regions may have different levels of motivation and learn differently.DOI: http://doi.org/10.11591/ijere.v3i4.6288
Volume: 3
Issue: 4
Page: 205-210
Publish at: 2014-12-01

Novel Approach to Control of Robotic Hand Using Flex Sensors

10.11591/ijra.v3i4.pp234-244
Sandesh R.S , Nithya Venkatesan
This paper discuss about novel design approach to control of a robotic hand using flex sensors which indicates a biomechatronic multi fingered robotic hand. This robotic hand consists of base unit, upper arm, lower arm, palm and five fingers. The aim is to develop an anthropomorphic five fingered robotic hand. The proposed design illustrates the use of 5 micro DC motors with 9 Degrees of Freedom (DOF).Each finger is controlled independently. Further three extra motors were used for the control of wrist elbow and base movement. The study of the DC motor is being carried out using the transfer function model for constant excitation. The micro DC motor performance was analyzed using MATLAB simulation environment. The whole system is implemented using flex sensors. The flex sensors placed on the human hand gloves appear as if they look like real human hand.  89v51 microcontroller was used for all the controlling actions along with RF transmitter/receiver .The performance of the system has been conducted experimentally and studied.
Volume: 3
Issue: 4
Page: 234-244
Publish at: 2014-12-01

Fuzzy Controlled Routing in a Swarm Robotic Network

10.11591/ijra.v3i4.pp272-276
Navya Manoj
Swarm Robotics originated in the research inspired by biology. It is the usual sense of the multi-robot systems which have been given the emerging attributes of swarm intelligence. In nature, ants, termites, wasps, bees and other social insects have inspired surprisingly inspiration of human. These groups of organisms show how to interact with a large number of simple individuals and generate the collective intelligence of systems to cope with complicated tasks. Swarm Robotics is a special robot system which is composed of a group of indiscriminate robots and so it is a typical distributed system. If a task is for only one robot and the robot will be very complex and expensive inefficiently. But if it is for the swarm robotics, the complex task can be done by many more simple robots efficiently. For the Routing problem, the quality of a potential route is determined by the length of the route (i.e. number of links) and the congestion along the route. It is desired to balance the traffic load among links in the network so it is desirable to select routes with a low obstacle rate. In addition, shorter routes are preferred over longer routes because they use fewer network resources
Volume: 3
Issue: 4
Page: 272-276
Publish at: 2014-12-01

The Influence of Principals Self Personality Values towards Their Work Culture

https://ijere.iaescore.com/index.php/IJERE/article/view/4482
Muhammad Asri , Lokman Bin Mohd. Tahir
This study aimed to identify the influence of principals’ self personality values toward teachers’ work culture in high schools. The sample consisted of 34 principals from SMAN, SMKN and MAN in the City of Makassar, South Sulawesi Indonesia. The sample of this study is population sample. The instrument used was a questionnaire. Data were analyzed using Statistical Package for Social application software Science version 20.0. Two statistics were used descriptive statistics including the mean score and inference of linear to test the hypothesis. The reliability (Cronbach Alpha) for the instruments used in this study is 0.879. The results show that honesty and compliance are both top components of self values of principals in implementing principalship at school. There was also a significant influence on self personality values of principals toward teachers’ work culture at school.DOI: http://dx.doi.org/10.11591/ijere.v3i4.6961
Volume: 3
Issue: 4
Page: 228-235
Publish at: 2014-12-01

Public Perception of the Millennium Development Goals on Access to Safe Drinking Water in Cross River State, Nigeria

https://ijere.iaescore.com/index.php/IJERE/article/view/4480
David D. Eni , William M. Ojong
This study evaluated the public perception of Millennium Development Goals (MDGs) of environmental sustainability with focus on the MDG target which has do with reducing the proportion of people without access to safe drinking water in Cross River State, Nigeria. The stratified and systematic sampling techniques were adopted for the study, considering a study population of 2,892,988 with a sample size of 1260 respondents. The data was analysed using t-test analysis for single mean at .05 levels of significance. The result obtained from the Cronbach Alpha reliability of the instrument was .67, while the mean ( ) and standard deviation were 20.98 and 3.73 respectively. The instrument measure what it was designed to measure in the study. The result showed a significant but positive t-value of 12.21. The calculated t-test of 12.2 was found to be significantly greater than the critical t-value obtained in the result; it implies that respondents have adequate perception of MDGs of environmental sustainability in terms of access to safe drinking water. The perception of MDGs of environmental sustainability was significantly high. It was recommended that environmental sustainability issues should be given priority and included in the school curriculum at all levels of education system. Secondly, the Cross River Government should embark on water schemes across the State to provide portable and affordable water in the State as it has done in Calabar Metropolis thereby meeting the MDG target, to halve, by 2015, the proportion of people without sustainable access to safe drinking water.DOI: http://dx.doi.org/10.11591/ijere.v3i4.6655
Volume: 3
Issue: 4
Page: 211-217
Publish at: 2014-12-01

Economic Load Dispatch for Multi-Generator Systems with Units Having Nonlinear and Discontinuous Cost Curves Using Gravity Search Algorithm

10.11591/ijape.v3.i3.pp166-174
Tunir Dey
Economic Load Dispatch aims at distributing the load demand between various generation stations in a system such that the total cost of generation is minimum. This is of vital importance since it not only reduces the operation cost of the generation utility but also helps in conserving fast dwindling energy resources. Modern day power systems are large interconnected systems with a large number of generator units each having its own cost curve. Ideally the cost function of a unit is a quadratic function of the power generated by the unit and the cost curve obtained is a smooth parabola. But in practice cost curves deviate from the idealised one due the several reasons such as valve point effect, multi fuel operation, existence of forbidden zones etc. and as such may not be continuous or analytic. Also for a large interconnected system it becomes essential to consider the effect of transmission losses. Conventional numerical method based approaches work well with systems without losses but for large systems with losses obtaining convergence becomes difficult as the number of iterations required as well as the computational time are very high. These methods fail entirely if non ideal cost curves are considered. Hence soft computing based methods become essential. Here Gravity Search Algorithm(GSA) has been used to for finding economic load scheduling in a multi generator system, given a certain load demand, and taking into consideration the effects of practical constraints on the idealised load curve. The algorithms for finding the economic scheduling has been written in Matlab and has provided satisfactory results based on the given tolerance values. Also the traditional and soft computing based approaches have been compared to demonstrate the advantages of one over the other.
Volume: 3
Issue: 3
Page: 166-174
Publish at: 2014-12-01

Development of Wireless Patient’s Vital Sign Monitor Using Wireless LAN (IEEE.802.11.b/g) Protocol

https://ijece.iaescore.com/index.php/IJECE/article/view/5505
Achmad Rizal , Vera Suryani , Jondri Jondri , Sugondo Hadiyoso
Vital sign monitor is typical medical instrument for basic physiological measurement. Medical practitioner assesses a patient’s health condition by observing measurement results shown in display. In this research, we designed low cost, wireless, PC-based vital sign monitor. Signals captured in designed vital sign monitor are electrocardiogram (ECG), photoplethysmogram (PPG), and body temperature. Captured data are transmitted via wireless LAN module so that medical practitioner is able to monitor patient’s condition remotely from another room or place. The system worked well for maximum transmission distance about 45 meters for LOS condition and 20 meter for NLOS condition.DOI:http://dx.doi.org/10.11591/ijece.v4i6.6429
Volume: 4
Issue: 6
Page: 893-901
Publish at: 2014-12-01
1 2 3
...
1896 1897
Show 1655 of 1897

Discover Our Library

Embark on a journey through our expansive collection of articles and let curiosity lead your path to innovation.

Explore Now
Library 3D Ilustration