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IEEE International Conference on Multi Topic

作者： Rabiya Rehman Murtaza Halai Biomedical Engineering Department Sir Syed University of Engineering and Technology Karachi Pakistan Biomedical Engineering Department RWTH Aachen University Achen Germany

pH level plays a vital role in the maintenance of human metabolic activity. pH levels of different bodily fluids i.e. blood, serum, urine etc are important parameters in diagnosing any condition, as unbalanced pH levels can interrupt all cellular activities and corrodes body tissues. In this paper a concept of implementing pH parameters in HL7v3 that is XML based is presented. The study includes a design of a temperature compensated digital pH meter interfaced through serial port with computer, XML schema is used to centralize the computerized data so as the patients and medical specialists around the world can access pH values of different bodily fluids through a unique identification (UID) code that assist them in diagnosing or treatment of a patient more effectively.

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Answering user queries from hotel ontology for decision making

Answering user queries from hotel ontology for decision maki...

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IEEE International Conference on Intelligent Computer Communication and Processing (ICCP)

作者： Noman Hasany Mohd. Hasan Selamat Department of Computer Engineering Sir Syed University of Engineering and Technology Pakistan Faculty of Computer Science and Information Technology University Putra Malaysia Malaysia

Semantic web comes out with the vision of making human readable information to be machine processable. Ontology, the core of semantic web, with concept instantiations serves as a domain knowledge base while semantic web query language provides retrieval of that information. In this paper, we presented a system that populates hotel related information in the ontology and a natural language querying platform to retrieve the information from a common interface for decision making. A simple user experiment shows that the system is time effective and helpful in making decisions with minimum queries as compared to browsing even with selected sites.

关键词： Ontologies Semantic Web Data mining Decision making Knowledge based systems Natural languages Information filters

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Structure and optical characterization of ZnO-Sn thin films

Structure and optical characterization of ZnO-Sn thin films

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IEEE International Conference on Multi Topic

作者： M. Kashif U. Hashim syed M. Usman Ali M. Willander M. Ibrar-ul-Haque Nano Biochip Research Group Institute of Nano Electronic Engineering (INEE) Universiti Malaysia Pedis Kangar Perlis Malaysia Department of Science and Technology Linköping University Norrkoping Sweden Department of Electronic Engineering N. E. D. University of Engineering and Technology Karachi Pakistan Department of Electronic Engineering Sir Syed University of Engineering and Technology Karachi Pakistan

ZnO-Sn thin films were prepared and deposited on p-type silicon substrate using sol-gel method, followed by spin coating technique. The solution consists of zinc acetate dihydrate, tin chloride, 2-methoxyethanol and monoethanolamine which acted as a precursor, dopant, solvent and stabilizer respectively. Effect of different Sn/ZnO molar ratios on the crystallinity and surface morphology of thin films were studied in this research. The molar ratios of Sn/ZnO were maintained to 1%, 3% and 5%. The ZnO-Sn thin films were heated on hotplate at 300 °C for 20 min and then sintered at 500 °C for 2 hrs. The effect of different molar ratios of Sn/ZnO on the surface morphologies and crystalline structure properties of ZnO-Sn thin films were examined using atomic force microscopy (AFM), X-ray diffraction (XRD). XRD patterns showed that all doped films have (101) as the preferred orientation. The optical properties showed that the film with Sn/ZnO molar ratio of 3% having the optical transmittance of more than 80%, which was more than other doped films of our experiment. The FTER spectrum shows that at Sn/ZnO molar ratio of 5%, the intensity of ZnO peak is very weak and that may be due to the incorporation of Sn with the ZnO structure.

关键词： Zinc oxide X-ray scattering

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Investment supervision in stock market

Investment supervision in stock market

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2010 International Conference on Computer Applications and Industrial Electronics, ICCAIE 2010

作者： Umm-E-Laila Raees, S. Faisal Ahmed Raees, Abdul Umm-E-Farwa Departmeny of Computer Engineering Sir Syed University of Engineering and Technology Karachi Pakistan Department of Computer Sciences Sir Syed University of Engineering and Technology Karachi Pakistan Department of Maths and Sciences Sir Syed University of Engineering and Technology Karachi Pakistan

ISBN: (纸本)9781424490554

Stock market plays a vital role in country's economy and financial system. It has many impacts on the economy like raising capital for businesses, aiding company growth, corporate governance, mobilizing savings for the investment, reallocation of wealth, government capital-raising for development. In stock market the investors are normally dependent on brokers for appropriate selection of shares for buying and selling. These dependencies normally have many issues like brokerage, monopoly of broker. In order to reduce dependency on the broker, a model is proposed for investment supervision that will help investor to find out the possible trends in shares for future investment. This model is used to analyzes the past financial statements of a company and it shows effectiveness of the company's share. On behalf of the results the user can take decisions for future investment in that company. This model uses ratio analysis for analyzing the financial statements. © 2010 IEEE.

关键词： Investments

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Vehicle detection using morphological image processing technique

Vehicle detection using morphological image processing techn...

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International Conference on Multimedia Computing and Information technology, MCIT'2010

作者： Ajmal, Aisha Hussain, Ibrahim M. Department of Computer Engineering Sir Syed University of Engineering and Technology Karachi Pakistan

ISBN: (纸本)9781424470037

Vehicle detection and classification of vehicles play an important role in decision making for the purpose of traffic control and management. In this paper we propose a novel and efficient algorithm based on image processing using aerial cameras for vehicle detection and classification especially in highways. The algorithm is mainly based on a sequence of morphological methods being applied on an image taken by an aerial camera of a road segment. The algorithm also uses thresholding and edge detection techniques for vehicle detection. Experiments are carried out over a wide range of vehicles, road segments and camera heights. A success rate of more than 85% and proper vehicle classification is achieved. ©2010 IEEE.

关键词： Vehicles

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Home automation and security system via PSTN

Home automation and security system via PSTN

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2010 2nd International Conference on Education technology and Computer, ICETC 2010

作者： Farid, Faizan Rehan, Muhammad Faizan, Faiza Tahir Qadri, M. Department of Electronic Engineering Sir Syed University of Engineering and Technology Karachi Pakistan

ISBN: (纸本)9781424463688

The objective here is to develop a home automation and security system which can be controlled and monitored remotely using any telephone line. The user can enter into the system by entering the valid pin code. After entering into the system, the user can control the status of devices connected with the system using any Public Switched Telephone Network (PSTN). The system can also be implemented for security purposes in banks or at home. If the user is at outstation, he can change the status of the lights remotely for security reasons. The heart of the system is a PIC micro-controller (PIC18F4520) which controls the complete working of the system. The GSM modem is also interfaced with the micro-controller. The remote user can also monitor the current status of the devices by sending SMS message to the GSM modem. The system can be controlled and monitored from anywhere by using telephone line. © 2010 IEEE.

关键词： Automation

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Implementation of discrete PID on Inverted pendulum

Implementation of discrete PID on Inverted pendulum

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2010 2nd International Conference on Education technology and Computer, ICETC 2010

作者： Faizan, Faiza Farid, Faizan Rehan, Muhammad Mughal, Shoaib Tahir Qadri, M. Department of Electronics Engineering Sir Syed University of Engineering and Technology Karachi Pakistan

ISBN: (纸本)9781424463688

The objective here is to implement the discrete PID on pendulum. The idea is to balance an Inverted pendulum electro-mechanically using Proportional Integral Differential (PID) Control. The heart of the system is a PIC microcontroller (pIC 18F4520). Controller commands the motor through PWM signal, which drives the cart to balance the pendulum in an inverted position. Pendulum's angular position is fed back by an incremental encoder mounted on its base, which is read by controller. Controller then calculates error and runs the PID algorithm to generate a new command signal. The exact position of pendulum with the value of its gains are sent to the attached Personal Computer (PC) using RS-232 protocol. The front panel is built in LabVIEW software. © 2010 IEEE.

关键词： Controllers

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Irregular surface area measuring instrument

Irregular surface area measuring instrument

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2010 2nd International Conference on Education technology and Computer, ICETC 2010

作者： Rehan, Muhammad Farid, Faizan Mughal, Shoaib Tahir Qadri, M. Department of Electronic Engineering Sir Syed University of Engineering and Technology Karachi Pakistan

ISBN: (纸本)9781424463688

The objective here is to develop a flat surface area measuring system which is used to calculate the surface area of any irregular sheet. The irregular leather sheet is used in this work. The system is self protected by user name and password set through software for security purpose. Only authorize user can enter into the system by entering the valid pin code. After entering into the system, the user can measure the area of any irregular sheet, monitor and control the system. The heart of the system is Programmable Logic Controller (Master KSOS) which controls the complete working of the system. The controlling instructions for the system are given through the designed Human to Machine Interface (HMI). For communication purpose the GSM modem is also interfaced with the Programmable Logic Controller (pLC). The remote user can also monitor the current status of the devices by sending SMS message to the GSM modem. © 2010 IEEE.

关键词： Programmable logic controllers

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Transmit and receive crosstalk cancellation

Transmit and receive crosstalk cancellation

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6th International Conference on Emerging Technologies, ICET 2010

作者： Amin, Najam Muhammad Weber, Michael Electronic Engineering Department Sir Syed University of Engineering and Technology Karachi Pakistan Communication Engineering Department Nokia Siemens Networks Ulm Germany

ISBN: (纸本)9781424480586

In modern mobile communication systems higher bandwidths are required by users. But higher bandwidths mean, that in Frequency Division Duplex (FDD) standard where uplink and downlink is separated, the receive band has to be protected against the transmit band. Violation of the receiver is caused by distortion coming from the transmitter, which is insufficiently suppressed by Transmit (TX) duplex filter in the receive (RX) band. Another type of distortion is called passive intermodulation (PIM). Reason for this is material nonlinearity and contact nonlinearity. The aim of this paper is to find a mathematical description of the passive nonlinearities and to reduce them in the digital baseband of the receiver. Two modeling techniques namely linear and nonlinear, the underlying algorithm and implementation of this algorithm on Gaussian Minimum Shift Keying (GMSK) modulated signals have been discussed and the results are presented. Firstly a brief introduction to intermodulation distortion is provided, followed by an overview of the hardware setup so that the reader can get acquainted to the hardware configuration used. An overview of the algorithm, which is the essence and underlying concept for intermodulation distortion suppression, is discussed, and finally implementation of this algorithm on GMSK signals along with its results is presented. © 2010 IEEE.

关键词： Intermodulation distortion

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Power efficient OFDM signals with reduced symbol's aperiodic autocorrelation

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World Academy of Science, engineering and technology 2010年 37卷 602-607页

作者： Hussain, Ibrahim M. Department of Computer Engineering Sir Syed University of Engineering and Technology Karachi 75300 Pakistan

Three new algorithms based on minimization of autocorrelation of transmitted symbols and the SLM approach which are computationally less demanding have been proposed. In the first algorithm, autocorrelation of complex data sequence is minimized to a value of 1 that results in reduction of PAPR. Second algorithm generates multiple random sequences from the sequence generated in the first algorithm with same value of autocorrelation i.e. 1. Out of these, the sequence with minimum PAPR is transmitted. Third algorithm is an extension of the second algorithm and requires minimum side information to be transmitted. Multiple sequences are generated by modifying a fixed number of complex numbers in an OFDM data sequence using only one factor. The multiple sequences represent the same data sequence and the one giving minimum PAPR is transmitted. Simulation results for a 256 subcarrier OFDM system show that significant reduction in PAPR is achieved using the proposed algorithms.

关键词： Peak to average power ratio

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