American Journal of Computer Sciences and Applications


Postal Service Tracking System

Research article of American Journal of Computer Sciences and Applications Postal Service Tracking System Yaknan John Gamb1*, Gbor I. Jacob2, Mu’awuya Dalhat1, Sani Aliyu Ahmad1 1Department of Computer Science, Federal University Wukari, Wukari, Taraba State, Nigeria. 2DepartmentMathematics, Statistics and Computer Science, Kwararafa University Wukari, Wukari, Taraba State, Nigeria. This research presents a web-based Postal Service Tracking System for an efficient and effective Postal Service Delivery. The software will help keep track of freight or parcel as they are being delivered from one place to the other. Most times the delivery of packages involves transporting them across long distances with several stops that may lead to the mix-up or possible misplacement of the packages enroute. The advent of Barcode or Quick Response (QR) has greatly assisted these efforts, to track mail from the time it arrives in the mail room to the time it is delivered to its intended location for pickup or delivery. In this research a Barcodes and QR identification techniques were used in the system to help identify and track packages. The system was implemented using Bootstrap for the front end, PHP for the business logic and MYSQL for the backend on an Apache server. Keywords: Post, Postal, Postal Service, Tracking System, QR Code, Barcode ...

Unified transportation authenticated reservation system using online QR-code

Research article of American Journal of Computer Sciences and Applications Unified transportation authenticated reservation system using online QR-code Hussam Elbehiery1, and Ghada Abdelhady2 1Ahram Canadian University (ACU), 2October University for Modern Sciences and Arts (MSA) Public transit whether it is buses, trains, or metros can be particularly frustrating for passengers. Although public transit is typically cheaper and more green than traveling by a private vehicle, public transit may not be as comfortable, convenient, or as quick as a private vehicle, passengers will have to plan their schedules around the public transit timetables, and unforeseen circumstances may disrupt public transit operations. However, the drawbacks of public transportation is slowly being eliminated; public transit is starting to become more comfortable, districts are offering more amenities for passengers such as internet access, and districts are starting to improve service by offering more trips and express service. Designing a computerized system has been introduced in this research which is based on the Internet to remotely reserve all types of tickets for the most important and essential types of transportation in Egypt. The covered transportation types in the suggested system should be trusted like private Buses companies like GO Bus, Blue eyes, West Delta, and East Delta, Underground Metro, and Railway Trains network. By generating QR-Code which will be sent to the customer on his own mail using any connected device to Internet including all details of the ticket. Whenever the customer reserves the ticket, he can deal with in a hard copy or electronic version. The suggested reservation system depends on using the databases of National IDs and Visa Card. So, it will be very easy and helpful systems which will leads to save time and money too, and in future it will minimize dealing with the tickets’ window in stations. Keywords: Message Digest, QR-code, ...

Performance Evaluation of SC-FDMA Systems Using Wireless Images

Research article of American Journal of Computer Sciences and Applications Performance Evaluation of SC-FDMA Systems Using Wireless Images K. M. Al-soufy, F. S. Al-kamali and F. A. Al-fuhaidy Department of Electrical, Faculty of Engineering and Architecture, Ibb University, Ibb, Yemen Recently, single crarrier frequency division multiple access (SC-FDMA) has drawn great attention in wireless communications due to its low peak-to-average power ratio and low sensitivity to carrier frequency offsets. The aim of this paper is to investigate and test the wireless image transmission over SC-FDMA with consideration of different basis functions, different modulation schemes and different subcarriers mapping schemes. Several experiments are carried out and the obtained results show that the wireless images transmission over SC-FDMA systems is possible efficiently. Simulation results also show that the interleaved systems significantly improve the clarity of the received image and their performances are better than that of the localized systems irrespective of the wireless channel or the modulation scheme used. Moreover, the results show that the discrete cosine transform (DCT)-based SC-FDMA (DCT-SC-FDMA) and discrete sine transform (DST)-based SC-FDMA (DST-SC-FDMA) system achieve better performance than the conventional discrete Fourier transform (DFT)-based SC-FDMA (DFT-SC-FDMA) system in terms of Mean Square Error (MSE) and Peak Signal-to-Noise Ratio (PSNR) values. Keywords: Image transmission, DFT-SC-FDMA, DCT-SC-FDMA, DST-SC-FDMA, QPSK and 16QAM ...

Compose Binary Matrices

Research article of American Journal of Computer Sciences and Applications Compose Binary Matrices Dr. Ahmad Hamza Al Cheikha Dep. of Mathematical Science, College of Arts-science and Education Ahlia Uni., Manama, Bahrain Hadamard Matrices and M-Sequences (which formed a closed sets under the addition and with the corresponding null sequence formed additive groups and generated by feedback registers) are used widely at the forward links of communication channels to mix the information on connecting to and at the backward links of these channels to sift through this information is transmitted to reach the receivers this information in correct form, specially in the pilot channels, the Sync channels, and the Traffic channel. This research is useful to generate new sets of sequences (which are also with the corresponding null sequence additive groups) by compose Hadamard matrices and M-sequences with the bigger lengths and the bigger minimum distance that assists to increase secrecy of these information and increase the possibility of correcting mistakes resulting in the channels of communication. Keywords: hadamard matrices, Walsh Sequences, M-sequences, Additive group, Coefficient of Correlation, Orthogonal sequences ...

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American Journal of Computer Sciences and Applications

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