Volume 11, Issue 2, March 2020

Mapping HCI Principals to Evaluate the Usability of Learning Applications for CCI User

Manal Umar, Muhammad Umar Bakhat, Masood Hassan

Department of Computer Science, Bahria University, Lahore

Abstract - Heuristic evaluation has turned into a broadly acknowledged technique for usability evaluation in software development. The paper portrays issues with the utilization of the method with software designed intended for Child Computer Interaction (CCI) community. CCI community includes children from age 4-15 years. The user testing technique was selected to collect the requirements from CCI user about the mobile phone software interface. The results indicated that CCI Usability Heuristic (CCIUH) is best suited for evaluating child usability. The result of this study will give advancement in the field of CCI for designing learning mobile application.

Index Terms - Usability Evaluation, E-Learning, Child Computer Interaction (CCI) and HCI

Transmission Power Control of UWB-WBAN for Avoidance of Interference to Cellular Networks Using Integrated Terminal for Both Networks

Pages: 8-15 (8) | [Full Text] PDF (261K)

Minsoo Kim, Takumi Kobayashi, Chika Sugimoto, Ryuji Kohno

Graduate School of Engineering Science, Yokohama National University, Japan

Abstract - Microwave frequency band of ultra-wideband (UWB) wireless networks such as wireless body area network (BAN) overlaps with those of existing radio networks such as 3G, 4G, and 5G cellular networks, so coexistence strategies for UWB networks, i.e., secondary users in radio regulation should be considered to ensure the performance of such existing licensed wireless networks, i.e., primary users to satisfy radio regulation. This paper proposes our defined integrated terminal equipped with communication capability of both secondary UWB and primary cellular networks, which can retrieve channel state information of cellular network and also control transmission power of the UWB system. The proposed system can more accurately and precisely control the transmission power of the UWB network, so that its interference to the primary network can be kept below the permissible level of radio regulation while maximizing the communication opportunities of the UWB network at the same time although a conventional UWB network has been simply switched off to avoid interference to a primary network in case of detecting a primary signal, so-called detection and avoidance (DAA).

Index Terms - Body Area Network (BAN), Cellular Network, Cognitive Radio (CR), Detect and Avoid (DAA), Integrated Terminal, Interference Mitigation, Transmit Power Control (TPC), Ultra-Wideband (UWB)

Towards Identification and Refinement in Modern Software Development Systems

Pages: 16-23 (8) | [Full Text] PDF (359K)

Maliha Zafar, Rizwan Ali

Pir Mehr Ali Shah Arid, Agriculture University, Rawalpindi, Pakistan
Department of Computer Science, UET, Lahore, Pakistan

Abstract - Software system enables us to perform complex business processes by using the modern software development approaches. Identification and refinement of requirements according to rely of the end-users at some time in the software evolution process is a major question. More vigorous issues with rely refers to the end-users is one of the rising features for the software systems. We propose scrumban framework with identification and refinement model to overcome this problem. Because scrumban is flexible approach, we can add changes at any time when we require even during sprint and handle these changes according to kanban board. We have made our development process interactive by involving users during all the phases of scrumban and try to achieve user satisfaction, clarity and trust.

Index Terms - Scrum, Identification, Requirements, Agile, Software Engineering, Refinement and MSDA (Modern Software Development Approaches)

Adaptive Path Design for Mobile Sink in Wireless Sensor Networks

Pages: 24-28 (5) | [Full Text] PDF (328K)

Safwan Kasem

Department of Communication Engineering, Tishreen University, Syria

Abstract - The wireless sensor network with mobile sink attracted the world's attention because of its great applications in various fields. The wireless sensor network consists of a group of small, self-energy nodes that sense the natural parameters change and transmit this data to sink node. Because the sensors have limited energy reserves and are difficult to recharge, Interest in energy conservation has emerged. due to the nature of the different applications of these networks, we can have important data that cannot be postponed, so this problem also appeared. many researchers and developers have attempted to reduce sensor energy consumption and prolong network lifetime or increasing network throughput. In this paper we suggested an algorithm for mobile sink path, the achievement of this algorithm will improve the network throughput, reduce the end to end delay and prolong the network life time by decreasing the energy consuming in the nodes, in addition to gather the important data in minimum delay. The simulation has done and the result has been compared with other studies.

Index Terms - WSN, Sensor, Mobile Sink, Path Delay, Simulation and Parameters

Volume 11, Issue 2, March 2020

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