International Journal of Computer Networks and Communications Security

Volume 2, Issue 6, June 2014




Wireless Networks in Hospitals; a Framework of Use and Implementation for Nursing Care

Pages: 188-196 (9) | [Full Text] PDF (235 KB)
Reza Safdari and Zahra Azadmanjir
Department of Health Information Management, Tehran University of Medical Sciences, Tehran, Iran

Abstract —
The purpose of current study is presenting a framework for implementation of wireless networks in hospitals to use in nursing care. In the proposed framework, implementation key aspects that include the purpose, application domains, and the functions of wireless terminals, network technology, mobile devices, user interface and the information structure of the system have described in the logical framework. Because, the framework has presented based on scientific principles and the experiences of other countries, it can be an appropriate framework for future efforts in this field.
Index Terms — Wireless Network, Hospital, Mobile Devices.



SCMR: Static Clustering based Design of UWB Monopole Antenna With EBG Structure And Ground With Rectangular Slots

Pages: 197-201 (5) | [Full Text] PDF (572 KB)
Shiva Chauhan and P.K. Singhal
Department of Electronics Engineering, Madhav Institute of Technology and Science, Gwalior-474003, M.P. , India

Abstract —
In this paper a low cost, simple and small size ultrawideiband circular monopole antenna is designed. The notch band is created by multiple number of slots in the ground plane. The proposed antenna is designed on the FR-4 substrate of height 1.6 mm. The antenna is designed with ground plane of dimension 50 x 55 mm and is fed by 50 ohm microstrip line. It is found that the EBG design approach in the ground plane is a good candidate for frequency rejection of wide range. The antenna achieves an operational bandwidth of 1.5 Ghz (1.5 Ghz to 3 Ghz) which included ISM band (1.8 and 2.4 Ghz), WiFi / Bluetooth (2.4 Ghz), Satellite Radio (2.3 Ghz), and GPS (1.575 Ghz). 
Index Terms — UltraWideBand (UWB), Electromagntic band Gap (EBG), notch Band.



Using the Component-Based Search Pattern to Enhance Reusing Product Discovery Mechanism in Mobile Adaptive E-Commerce WebApps

Pages: 202-210 (9) | [Full Text] PDF (568 KB)
Department of Electrical and Computer Engineering, University of Tabriz, Tabriz, Iran
Department of Computer Engineering, Ilkhchi Branch, Islamic Azad University, Ilkhchi, Iran

Abstract —
E-commerce webapps provide people with comfortable ways to expose and order products. Ability to ubiquitously performing e-commerce activities like searching functionality is essential to e-commerce scenarios. The advent of smartphones is provided a novel insight into e-business. Unfortunately the innate features of handheld devices like different width and height size, memory capacity, and other software and hardware features lead to confuse customers on searching products or services and seeing results in a proper manner. To help better discovery of products using smartphones, this study provides best design practices (patterns) to supply searching abilities. The paper consists all component-based search patterns needed to discover the products and to show the results. For each search pattern; problem, motivation, context, forces and a solution is provided regarding capabilities of different smartphones. Finally the study discusses how using the collection of search patterns provide enhanced discovery mechanism in the context of smartphones via presenting known examples from well-known WeabApps. 
Index Terms — E-Commerce, Smartphones, Search Patterns, Modeling, WebApps.



A New Approach for Beaconless Geographical Routing in Wireless Sensor Networks

Pages: 211-215 (5) | [Full Text] PDF (293 KB)
Affiliation, Department Of Computer And Electrical Engineering, Shiraz University, Shiraz, Iran

Abstract —
Lately geographic routing algorithms applicable for large scaled in sensor network. In existing geographic routing algorithms, the packet is sent to neighbor that closest to destination by using a greedy forwarding scheme. Whereas to access the neighbor's position requires that a mechanism beaconing periodically. So in the sensor network with highly dynamic topology the communication overhead is increased. Therefore, many beaconless geographic routing has been introduced recently. In this paper a novel approach for beaconless geographic routing (NBGR) is proposed. NBGR acts in two modes: a main mode and recovery mode. In the main mode three kinds of control message RTS, CTS and SELECT is used. Thus a forwarder node broadcast an RTS and sets a timer. The neighbors in the positive progress area (PPA) that receive the RTS set a timer with appropriate delay function independently. So that the closest neighbor to destination responds first. This process is continued until the packet has received to node that don’t have any neighbor in its PPA, then routing shifted into recovery mode. In Recovery mode the packet is sent to the destination by traversing on the face of planar graph such as a relative neighborhood graph (RNG) or Gabriel graph (GG). We show in NBGR the packet delivery ratio is improved than same algorithms such as BLR and CBF as well, according to the new delay function the energy of nodes are applied in a balanced way and the possibility of collision of CTS send back the forwarder node is decreased considerably. Also in NBGR the based on the selections from the suitable forwarding area the probability of the void area problem is minimized. 
Index Terms — Wireless Sensor Networks, Geographical Routing, Forwarding Area, Delay Function, Recovery Mode.