ISSN 2253-0150
Editor-in-Chief :
Mohamed Ridda LAOUAR
Table of contents:
Volume 3 issue 1 - Current Issue
Published: 2015
Articles
Editorial
- Yan Dongning. Design Department, Politecnico di Milano. Italy
Customer Reviews Embedded E-commerce Interface
Design for User Decision Improvement
Show/Hide Abstract
Customer reviews in E-commerce are playing an
important and unique role in user purchase decision. However,
the overwhelming amount of reviews and inconsistent writing
style require significant effort to read and tend to let important
information slip away. Grounded on that the understanding of
decision making behavior is crucial for designing effective
information display, we conducted a formative study to
investigate consumer decision making behavior in the
environment of hotel online booking. Based on the extracted
requirements for the process of narrowing down options, we
designed two alternative opinion attributes (i.e. attributes
extracted from customer reviews) embedded filter interfaces,
respectively called slider-filter and checkbox-filter. Then we
performed a user study to compare the two designs empirically.
It turned out the effectiveness of incorporating opinion attributes
in filter and verified the slider-filter, visualizing distribution via
bars and attribute correlation via simultaneous change, achieved
significantly higher user assessments in terms of perceived
decision accuracy, cognitive effort, satisfaction and intention to
use in the future.
- Nikolajs Bogdanovs, Elans Grabs and Ernests Petersons
Riga Technical University. Latvia
Software Implementation of Real-time Discrete
Wavelet Transform Algorithm with Filter Banks for
Network Traffic Parameters Estimation
Show/Hide Abstract
This article describes real-time discrete wavelet
transform algorithm implementation for high-level programming
language. The article describes multiscale transform algorithms
both for direct discrete wavelet transform and inverse discrete
wavelet transform. This algorithm has been implemented in C++
programming language and tested with Raspberry Pi microprocessor
system. This article proposes the improved delay line
algorithm without full shifting of register. New algorithm requires
single reading operation, single writing operation and one division
calculation for any length of delay line. The article includes
experimental measurements of processing time on Raspberry
Pi for various scale numbers. The algorithm described in this
article can be used with any software tool capable of using high
level programming language, for example Matlab, Octave, Opnet,
as well as microprocessors in communications devices, such as
routers, switches and access points. This is the main purpose
– to create algorithm which is not tied strictly to hardware
implementation but also, nonetheless, provides real-time discrete
wavelet analysis capability.
- Wenrui Zhong, Wenlin Bai, Lemen Chao, Hepu Deng and Xiaomi An
Renmin University of China, Beijing, China.
Public Value of E-Government in China: an Empirical
Analysis
Show/Hide Abstract
UWB technology is a serious candidate for the new emerging Wireless Personal Area Network (WPAN). In this context UWB is expected to provide very high data rates = 500Mbps for short range communication. Many physical layer schemes have been proposed to address such rates on the wireless medium. Historically pulse based systems have been first proposed as the main modulation technique for UWB. The pulse based modulations inherently occupies a very large bandwidth (several GHz), which is required due to the very low emitting power. This technique is currently considered for low data rate in the sensor network context, but seems to be discarded for high data rate transmissions. Another physical layer, Multi Band Orthogonal Frequency Division Modulation (MB-OFDM), has been proposed within the IEEE802.15.3a task group. This technique is based on the well known OFDM scheme which allows good immunity towards multipath channels. In this proposal, only a 500MHz band is used at a given time, and a frequency hopping technique spreads the signal over several GHz. Finally, Direct Sequence Spreading (DSS) has also been proposed in the UWB framework (DSUWB). In this scheme, the data are spread over few GHz of bandwidth by means of very high rate sequences. In the existing proposal, the difficulty comes with the increase of the data rate, which imposes to shorten the spreading sequences. As a consequence there is an increase of the interference which results either in performance degradation or in receiver complexity increase.
- Vimala Nunavath, Andreas Prinz.
University of Agder, Norway
DATA INTEGRATION FRAMEWORK FOR FIRE IN THE MUSIC FESTIVAL EMERGENCY MANAGEMENT
Show/Hide Abstract
Effective management of emergency requires timely information
sharing and coordinated decision making at all levels of the emergency. In
emergency management, decision making depends on number of factors such
as stress, information overload, unstructured data from different sources, data in
different formats, and in different databases. For efficient decision making in
emergency management, data from different databases has to be integrated. In
this paper, we propose a framework for data integration. The proposed
framework ensures better decision making during emergency.
- MATHEW MILES. McKay Library, Brigham Young University - Idaho, USA.
USING WEB2PY PYTHON FRAMEWORK FOR CREATING
APPLICATIONS IN THE ACADEMIC LIBRARY
Show/Hide Abstract
Web2py is a free and open source web application framework built in Python and designed by
Massimo Di Pierro. The goal of the framework is to make web development easier by focusing on
three main goals: ease of use; rapid development; and security. Web2py follows a strict MVC
framework where the controls and web templates are all written in pure python. No additional
templating language is required. Many of the features most web applications require are built into
every Web2py application such as user, group and permissions tables and a menuing structure. The
DAL or Database Abstraction Layer allows the user to create schema definitions, which are then
translated into database tables in the target database, and form widgets that are serialized in html
templates. The generated forms provide field validation automatically and the DAL blocks malicious
SQL Injections. Web2py was also built with Internationalization features that provide a structured
way to deliver applications in a variety of languages.