IJECS: International Journal of Electrical & Computer Sciences
Vol: 11 Issue: 06
ISSN: 2077-1231 (Online) 2227-2739 (Print)
Publication Date: 10th December, 2011
|Title: Drivability enhancement of transport buses using an auxiliary system with an IMU|
|Author(s): Fabian Hoeflinger, Maximilian Toerk, Abhishek Ojha, Leonhard M. Reindl|
|Pages: 01-07||Paper ID: 115006-6464-IJECS-IJENS||Published: December, 2011|
Abstract: In this work we present an Onboard-Unit for sensing critical and uneconomical drivability of buses. Especially old buses can be upgraded with the Onboard-Unit to monitor and inform the bus driver about his driving behavior. The driver can adapt his driving behavior to improve the vehicle safety and reduce the fuel consumption. Since CAN-Bus access is often not available in old buses wireless measurement unit such as GPS and the rotational measurement unit are used to measure the bus velocity and the rotational speed of the engine respectively. Furthermore a laser scanner measures the distance to the vehicle ahead. The sensor peripheries and the components for the Onboard-Unit are analyzed and selected for easy installation. The Onboard-Unit logs the sensor data and creates a driver profile. The bus operator can monitor the real time drivability of the bus on a web interface connected to the Onboard-Unit through a GSM-Module.
|Keywords: Onboard-Unit, Inertial Measurement Unit, rotational speed sensor, wireless sensor|
|Full Text (.pdf) | 2865 KB ||
|Title: Automatic Signal Segmentation using the Fractal Dimension and Weighted Moving Average Filter|
|Author(s): H. Azami, B. Bozorgtabar, M. Shiroie|
|Pages: 08-15||Paper ID: 110406-7878-IJECS-IJENS||Published: December, 2011|
Abstract: In many applications of the signal processing such as automatic analysis of EEG signal, it is needed that signal is split to smaller parts that each part has the same statistical characterizations such as the amplitude and frequency. This act has been called signal segmentation. In this paper, the signal is initially filtered by weighted moving average (WMA). Not only WMA can emphasize recent events which this act is very important in the signal segmentation, but it can also detect important underlying unadulterated from of the time series by attenuating its short-term variations. After filtering the signal, fractal dimension (FD) of the signal is computed and used as a feature for automatic segmentation of the signal. The proposed method has been applied on the synthetic and real EEG signals and then, this method has been compared with improved nonlinear energy operator (INLEO) method which is known as a good method for segmenting a signal. The simulation results indicate that these proposed techniques have greater accuracy compared with previous methods.
|Keywords: Non-stationary signal, adaptive segmentation, fractal dimension (FD), weighted moving average (WMA) filter.|
|Full Text (.pdf) | 564 KB ||
|Title: Data Protection Act in India with Compared to The European Union Countries|
|Author(s): Danish Jamil, Muhammad Numan Ali Khan|
|Pages: 16-20||Paper ID: 112206-7474-IJECS-IJENS||Published: December, 2011|
Abstract: The paper discusses about the cyber law system prevalent in India and also suggests that more robust and efficient law system should be introduced. It briefly shows that there is not much public awareness and seriousness regarding the Data Protection. Though India is regarded as a big host for the outsourcing and data processing but still the employees and people working for these companies and call centres are not aware about the cyber law as the cyber law is not much flourished and propagated in India as it is in the European countries. The European countries have developed a good and robust data protection act which easily convicts the guilty and hence the people are more aware and cautious while getting into dark side to the computer world. The paper also shows in the few laws that are been really implemented in India.
Keywords: Data Protection Act, Cyber Crime, Section 43A, Section 65, Section 66, Section 72A, BPO, Personal Data Protection Bill, Outsourcing Industry, Information Technology Act, 2000, OECD, Safe Harbour approach Cyber Law, Gulity, Employees, Outsourcing, Data Processing, Propagated, Convicts, Cautions, Flourished, Implemented.
|Full Text (.pdf) | 64 KB ||
|Title: Analyzing And Designing 2 To 4 Decoder Emiter Couple Logic (ECL)|
|Author(s): Agung Darmawansyah, Asih Setyarini|
|Pages: 21-26||Paper ID: 115706-8282-IJECS-IJENS||Published: December, 2011|
Abstract: ECL technology has propagation delay which is fast and able to work under high frequency that is around 125-200MHz. This research aims at analyzing and designing 2 to 4 Decoder IC using ECL Technology (Emitter Couple Logic). Decoder ECL uses shared voltage -5,2V with external capacitor which is 15pF, Rc= 2kΏ and RE= 10kΏ. Specification of characteristic simulation design of voltage transfer characteristic (VTC) is VIL = -1,06V; VOL = -1,23V; VIH = -0,94V; VOH= -0,81V; Noise Margin NMH = 0,13V and NML = 0,222v. Simulation of propagation delay on CL 15pF is tPLH = 10,25ns and tPD= 5,655ns. Power dissipation produced is 3,68mV. The result of simulation design shows that specification of IC 2 to 4 Decoder ECL has better speed and power dissipation than decoder TTL (74139) and decoder CMOS (4555).
|Keywords: Emitter Couple Logic, Decoder|
|Full Text (.pdf) | 223 KB ||
|Title: A Method for Collaborative Distribution and Retrieval of Information in MANETs|
|Author(s): Jorge E. Ortiz T., Mauro Florez Calderón|
|Pages: 27-32||Paper ID: 117506-8989-IJECS-IJENS||Published: December, 2011|
Abstract: A mobile ad hoc network (MANET) is characterized by its dynamic and decentralized topology, which allows exchanging information between mobile nodes without any pre-existing telecommunications infrastructure. However, mobile devices have constrained resources like memory, energy, bandwidth, etc., that must be optimally used in situations where a MANET is needed. For that reason, we propose a greener method for content sharing in MANETs that reduces energy consumption of nodes. We evaluate our method through simulations using J-Sim environment. Simulation results show that our method uses more efficiently the nodes resources than a centralized content sharing technique.
|Keywords: Collaborative content retrieval, content distribution, J-Sim, mobile ad hoc network, node category.|
|Full Text (.pdf) | 2624 KB ||
|Title: A Supervisory Control System for Temperature and Humidity in a Closed House Model for Broilers|
|Author(s): Alimuddin, Kudang Boro Seminar, I Dewa Made Subrata, Sumiati, Nakao Nomura|
|Pages: 33-41||Paper ID: 117706-9494-IJECS-IJENS||Published: December, 2011|
Abstract: Broiler is a kind of superior race results of crosses of chickens nations that have high productivity power, especially in the production of broiler. In broiler rearing business, the temperature is a crucial factor in chicken rearing in tropical regions. Closed house is a system house that offers a solution to provide thermal comfort of broilers. Research objectives are: (1) to model the temperature distribution in the closed house using Computational Fluid Dynamics (CFD) and to model humidity using physicometric in the closed house; (2) to create a mathematical model that determines the transfer functions of temperature and humidity in closed houses for broiler; (3) to apply a supervisory control system in selecting the control mode (PI, PD, PID) temperature and humidity in order to stabilize temperature and humidity in the broiler house so that growth of broiler chickens in the broiler house can be improved Data primary and secondary data. The primary data (floor, wall, room, and roof temperature) was obtained from measurements using electronic measuring devices. The secondary data (external humidity, temperature, radiation) that was obtained from the report provided by BMG Bogor. The simulation results shows the trend of temperature increase at the outlet regions (roof, wall, and floor outlets) of the broiler house. This is caused by the accumulation of heat due to convection cock blowing air flow towards the outlet. Validation was done by comparing the actual measured data and simulated data. The supervisory control model that has been developed has been validated. The validation shows that coefficient of determination of temperature regression (R2) is 92%, standard deviation 0.0916, and coefficient of determination of humidity regression (R2) is 91%, standard deviation 0.065. Response characteristics of PD, PI and PID yield rise time, spike, time resident, steady state error have been confirmed to comply with standard values.
|Keywords: Supervisory control, Temperature, Humidity, Modeling Closed House, Broiler|
|Full Text (.pdf) | 540 KB ||
|Title: Data MiningAssociation Rules|
|Author(s): Vasso Stylianou, Andreas Savva, Antonis Demetriades|
|Pages: 42-49||Paper ID: 118506-7474-IJECS-IJENS||Published: December, 2011|
Abstract: Business Intelligence (BI) refers to a broad category of applications which assist executive business users to improve their decisionmaking and strategic planning by collecting, storing and analysing a large volume of historically collected data. BI systems may be divided into reporting systems and data mining applications. Data mining (also known as Knowledge Discovery in Data, or KDD) is the science of extracting useful knowledge from huge data repositories. Data Mining applications often employ sophisticated mathematical and statistical techniques to perform data analysis, search for specific patterns or relationships, if they exist, and make future predictions. This paper focuses on link analysis used by Data Mining systems to extract associations between individual data records or data sets involved in the same event. It demonstrates an implementation of the SETM algorithm with custom modifications made to expand functionality and improve time and space complexity. The system makes use of the frequent itemsets to generate association rules, while also calculating supportand confidence. The algorithms are integrated in a user-friendly system which can be used to generate frequent itemsets and extract association rules online in real time.
|Keywords: Business Intelligence, Data Mining, SETM algorithm.|
|Full Text (.pdf) | 652 KB ||
|Title: HON-OVCS: Virtual Topology Based Architecture for QoS Guarantee in OBS Networks|
|Author(s): Mohamed Mostafa A. Azim, Aly M. El-Semary, Abdullah M. Al-binali|
|Pages: 50-57||Paper ID: 118706-4545-IJECS-IJENS||Published: December, 2011|
Abstract: Optical Burst Switching (OBS) has been proposed as a practical balanced switching architecture between Optical Circuit Switching (OCS) and Optical Packet Switching (OPS). Hybrid Optical Networks (HON) Networks that combines OCS and OBS has emerged to grant the OBS network the ability to support connection-oriented applications. Although efficient in terms of reducing the burst loss probability as well as improving the overall network performance, it provides a limited degree of Quality of Service (QoS). What we mean by QoS is the capability of a network to provide a guaranteed level of availability while satisfying strict limits on delay. In this paper, we propose a new hybrid architecture for OBS networks. The proposed architecture qualifies the OBS network to support different classes of QoS. Our simulation results show that, the proposed framework will be useful for providing guaranteed capacity as well as satisfying the QoS requirements of the real time applications of the next generation optical internet.
|Keywords: Optical Burst Switching, OBS, QoS, Virtual topology, Jitter.|
|Full Text (.pdf) | 706 KB ||
|Author(s): Oodo Ogidi Stephen, Liu Yanli, Sun Hui|
|Pages: 58-68||Paper ID: 119706-3838-IJECS-IJENS||Published: December, 2011|
Abstract: The Distribution System in Nigeria is faced with low voltage and high loss, these two problems of voltage drop and losses in the distribution network varies with the pattern of loading on the distribution network. Voltage regulation on the distribution network becomes an important issue due to the presence of many industrial loads which vary their demand for reactive power. These industrial loads having lagging power-factor; they absorb reactive power which can deteriorate the quality of supply on the distribution network. This paper which to examine an integrated for an optimal cost effective approach to improve the power factor and harmonic issue by the use of Switched capacitor banks to provide a controllable and variable amount of reactive power precisely according to the requirement of the load to such that power factor is improved and harmonics are reduced on the distribution network , losses are within limits and also satisfy the statutory voltage limits at customers premises. Capacitor Bank and Reactors devices with mechanical time control switch can be connected in parallel to the distribution network to supply the type of reactive power or current needed to counteract the out of phase component of current required by the inductive load to eliminate or reduce to an acceptable limit the voltage regulation. These conventional compensators can be switched in and out of the system by mechanical switches based on the system loading as it varies throughout the day. The objective shall be achieved by an evaluation of the operational requirement for power factor requirement and voltage profile on a typical Nigerian distribution Network.
|Keywords: Distribution System, Voltage regulation, Power factor, Switched Capacitor bank, Mechanical Switches.|
|Full Text (.pdf) | 111 KB ||
|Title: PLC Based Intelligent Traffic Control System|
|Author(s): Muhammad Arshad Khattak|
|Pages: 69-73||Paper ID: 110606-9494-IJECS-IJENS||Published: December, 2011|
Abstract: The main object of this study was to design and implement intelligent traffic control system. The system developed is able to sense the presence or absence of vehicles within certain range by setting the appropriate duration for the traffic signals to react accordingly. By employing mathematical functions to calculate the appropriate timing for the green signal to illuminate, the system can help to solve the problem of traffic congestion. Hardware simulation tests were successfully performed on the algorithm implemented into a PLC (programmable logic controller). The new timing scheme that was implemented promises an improvement in the current traffic light system and this system is feasible, affordable and ready to be implemented especially during peak hours, off hours and pedestrians. The PLC checks the status of the sensors. The system resolution is depend on the output provided by the sensors , Then PLC checks the priorities and then provide output signal to the traffic lights poles for ON or OFF the Red, yellow or Green lights and ON time is depend on the specific priorities. The roads are opened in that manner that east road, west road, north road and then south road is open.
|Keywords: Intelligent Traffic Control System, Traffic Signals|
|Full Text (.pdf) | 466 KB ||