Proceedings of the 2nd Pan African International Conference on Science, Computing and Telecommunications (PACT 2014)最新文献_第3页

Cost-effective mobile based learning content delivery in resources and network constrained environments 在资源和网络受限的环境下，具有成本效益的基于移动的学习内容交付

Proceedings of the 2nd Pan African International Conference on Science, Computing and Telecommunications (PACT 2014) Pub Date : 2014-07-14 DOI: 10.1109/SCAT.2014.7055153

Michael P. J. Mahenge, J. Mwangoka, F. Simba

{"title":"Cost-effective mobile based learning content delivery in resources and network constrained environments","authors":"Michael P. J. Mahenge, J. Mwangoka, F. Simba","doi":"10.1109/SCAT.2014.7055153","DOIUrl":"https://doi.org/10.1109/SCAT.2014.7055153","url":null,"abstract":"The advancement in Information and Communication Technologies (ICTs) has brought opportunities for new ways of learning in Higher Learning Institutions (HLIs) through e-learning systems. While these opportunities exist, e-learning contents delivery and accessibility in third world countries like Tanzania is still a challenge due to resource and network constrained environments. The challenges include: high cost of bandwidth connection and usage; high dependency on the Internet; limited mobility and portability features; inaccessibility during offline period and shortage of ICT facilities. So there is a need for a technology to bridge these gaps. This paper explores the opportunities brought by mobile technologies to find out a cost-effective solution for e-learning content delivery and accessibility in HLIs of Tanzania. Specifically, the paper proposes a Cost-effective Mobile Based Learning Content Delivery approach for resource and network constrained environments. The proposed solution has the potential to reduce the cost of bandwidth usage, and cut down server's workload and Internet usage overhead by synchronizing contents from a remote server to a local database in the user's device for offline use. It will also improve the quality of experience and participation of learners as well as facilitate mobility and portability in learning activities.","PeriodicalId":315622,"journal":{"name":"Proceedings of the 2nd Pan African International Conference on Science, Computing and Telecommunications (PACT 2014)","volume":"6 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-07-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126864400","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 6

Implementation considerations for SDF technique SDF技术的实现注意事项

Proceedings of the 2nd Pan African International Conference on Science, Computing and Telecommunications (PACT 2014) Pub Date : 2014-07-14 DOI: 10.1109/SCAT.2014.7055122

Thanh T. Nguyen, J. Devlin, D. Elton, E. Custovic, B. Bienvenu

{"title":"Implementation considerations for SDF technique","authors":"Thanh T. Nguyen, J. Devlin, D. Elton, E. Custovic, B. Bienvenu","doi":"10.1109/SCAT.2014.7055122","DOIUrl":"https://doi.org/10.1109/SCAT.2014.7055122","url":null,"abstract":"The Tasman International Geospace Environment Radars (TIGER) form part of an international network of similar HF radars called Super Dual Auroral Radar Network (SuperDARN) which explore the impact of solar disturbances on Earth by monitoring the location and velocity of plasma of plasma irregularities and related phenomena occurring in the ionosphere. These radars utilise an Auto Correlation Function (ACF) to measure the changing phase of the ACF between lag times to determine the Doppler frequency and thus the target velocity. With the development of TIGER-3, an all digital radar platform, a novel method of determining target velocities has been proposed. In the proposed method, a comparison of the transmit and receive signal magnitude spectrums is performed to determine the Spectrum Difference Function (SDF). It has been shown that the gradient of SDF in the vicinity of the carrier frequency is proportional to the target Doppler shift. In this paper we consider the constraints of hardware processing on the implementation of the technique and suggest an alternate architecture for the TIGER-3 radar that will allow a dramatic reduction in computational complexity to allow the real-time determination of velocity in conjunction with the normal operation of the receivers. The proposed technique moves the processing from the RF frequency band to a low frequency IF band to reduce the computational length of the Fast Fourier transform (FFT) without compromising the validity of the technique.","PeriodicalId":315622,"journal":{"name":"Proceedings of the 2nd Pan African International Conference on Science, Computing and Telecommunications (PACT 2014)","volume":"76 5 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-07-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134410900","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Performance analysis of raptor code-based IEEE 802.16e system with different modulations techniques 基于raptor代码的IEEE 802.16e系统在不同调制技术下的性能分析

Proceedings of the 2nd Pan African International Conference on Science, Computing and Telecommunications (PACT 2014) Pub Date : 2014-07-14 DOI: 10.1109/SCAT.2014.7055142

Abimbola I. Adedapo, Mzyece Mjumo, Noel Guillaume

引用次数: 0

An overview of pipeline leak detection and location systems 管道泄漏检测和定位系统概述

Proceedings of the 2nd Pan African International Conference on Science, Computing and Telecommunications (PACT 2014) Pub Date : 2014-07-14 DOI: 10.1109/SCAT.2014.7055147

Lawrence Boaz, S. Kaijage, R. Sinde

引用次数: 70

A mobile solution for road accident data collection 交通事故数据收集的移动解决方案

Proceedings of the 2nd Pan African International Conference on Science, Computing and Telecommunications (PACT 2014) Pub Date : 2014-07-14 DOI: 10.1109/SCAT.2014.7055140

Kenga Mosoti Derdus, Vitalis G. Ozianyi

{"title":"A mobile solution for road accident data collection","authors":"Kenga Mosoti Derdus, Vitalis G. Ozianyi","doi":"10.1109/SCAT.2014.7055140","DOIUrl":"https://doi.org/10.1109/SCAT.2014.7055140","url":null,"abstract":"Road accidents are a major cause of injuries and death in developing countries. It is crucial to build a road accident database and data retrieval system as a fundamental resource in improving road safety. Since the accident database needs to hold reliable data, accurate methods for accident data collection must be used. This study focuses on improving accident data collection by using a Smartphone-based application. The application's aim is to improve data collection, while supporting mobility, ubiquity and accuracy. The name of the application is CrashData; it has been developed and tested in Kenya. Using the application, data are sent to a central database for storage and can be retrieved by the same application. The type of information collected is determined by the Model Minimum Uniform Crash Criteria (MMUCC), National Institute of Statistics (NIS) and other accident data sets. Location information recording is supported and depends entirely on Smartphone inbuilt GPS module and Google places API. The application provides a web interface for office based managers, who can use Google maps to identify accident hotspots by mining location information from the database.","PeriodicalId":315622,"journal":{"name":"Proceedings of the 2nd Pan African International Conference on Science, Computing and Telecommunications (PACT 2014)","volume":"15 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-07-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116910042","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 6

A solar-powered, Wi-Fi re-programmable precision irrigation controller 太阳能供电，Wi-Fi可重新编程精确灌溉控制器

Proceedings of the 2nd Pan African International Conference on Science, Computing and Telecommunications (PACT 2014) Pub Date : 2014-07-14 DOI: 10.1109/SCAT.2014.7055141

K. Fue, J. Schueller, A. Schumann, S. Tumbo

{"title":"A solar-powered, Wi-Fi re-programmable precision irrigation controller","authors":"K. Fue, J. Schueller, A. Schumann, S. Tumbo","doi":"10.1109/SCAT.2014.7055141","DOIUrl":"https://doi.org/10.1109/SCAT.2014.7055141","url":null,"abstract":"As the Tanzania population grows, scarcity of resources like water and electricity will pose a great risk to horticultural crop production and society activities. Precision irrigation poses a great opportunity to save water and energy in agriculture. The current off-the-shelf machines used to control water are incompatible to Tanzanian conditions, very expensive, delicate, or don't have enough features. This study proposed a reprogrammable control system prototype design and implementation that can be used for African countries, particularly in Tanzania. The proposed integrated controller is a solar-powered system that uses low cost electronic devices to automate drip irrigation and to determine when to irrigate and how much to irrigate. The controller has been tested under African farms and achieved a high level of reliability and maintainability. The controller is a high tech tool that can be reprogrammed or updated wirelessly using a laptop and the data can be downloaded using any android based smartphone. The wireless technology incorporated can be used to transfer instant data of rainfall and soil moisture content. The system automates data cleaning while collecting instant information of the soil moisture, temperature, humidity and rainfall. It can store data at least for seven days.","PeriodicalId":315622,"journal":{"name":"Proceedings of the 2nd Pan African International Conference on Science, Computing and Telecommunications (PACT 2014)","volume":"39 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-07-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124633138","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 7

A web service approach for integrating e-Health Data in a low bandwidth environment 在低带宽环境中集成电子卫生数据的web服务方法

Proceedings of the 2nd Pan African International Conference on Science, Computing and Telecommunications (PACT 2014) Pub Date : 2014-07-14 DOI: 10.1109/SCAT.2014.7055133

V. Ndume, Y. Nkansah-Gyekye, Jesuk Ko

{"title":"A web service approach for integrating e-Health Data in a low bandwidth environment","authors":"V. Ndume, Y. Nkansah-Gyekye, Jesuk Ko","doi":"10.1109/SCAT.2014.7055133","DOIUrl":"https://doi.org/10.1109/SCAT.2014.7055133","url":null,"abstract":"This paper describes a batch algorithm for integrating heterogeneous e-Health data using Web Service Model in a low bandwidth environment. The focus is on the problem of higher volume of data stored in relational databases and the integration architecture with uncertain schema. In specific the paper presents a batch algorithm for efficient integration and management of heterogeneous health records in an environment with higher network disconnection. The web service application for implementation was developed using Visual Basic .NET. The validation and test cases of the software was done using Demographical Surveillance data sets as well as baseline census data for sample vital registration with verbal autopsy. The result indicates that the proposed algorithm is capable of transferring data in a network with higher disconnection. The analysis of the execution time among four configured relational databases indicates that time taken to transfer data between MySQL engine and SQL server engine is shorter compared to other relation databases under the test. In addition, the architecture and the embedded algorithm may be useful for integrating e-Health records from different research group so that scientists can access them at a single point.","PeriodicalId":315622,"journal":{"name":"Proceedings of the 2nd Pan African International Conference on Science, Computing and Telecommunications (PACT 2014)","volume":"117 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-07-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124020056","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 1

Security frameworks in the converged web and mobile applications: A review 融合web和移动应用程序中的安全框架:综述

Proceedings of the 2nd Pan African International Conference on Science, Computing and Telecommunications (PACT 2014) Pub Date : 2014-07-14 DOI: 10.1109/SCAT.2014.7055131

D. Nyambo, Z. Yonah, C. Tarimo

{"title":"Security frameworks in the converged web and mobile applications: A review","authors":"D. Nyambo, Z. Yonah, C. Tarimo","doi":"10.1109/SCAT.2014.7055131","DOIUrl":"https://doi.org/10.1109/SCAT.2014.7055131","url":null,"abstract":"As internet access is becoming pervasive there is an increasing number of mobile applications users, Enterprises are now reaching a diversified number of customers through the use of web and mobile applications. However, this improvement in the accessibility means to computing resources does not move in same pace with the improvement of security controls to protect data and services offered through web and mobile applications. This review paper is focused on identification of both practical and theoretical security frameworks for web and mobile applications in use, with an intent of assessing the capability of the frameworks to assist developers build secure mobile web applications. A discussion follows the review by highlighting main characteristics of the frameworks with their merits and demerits. The analysis establishes that, available security frameworks are not adequate for the growing convergence of web and mobile applications, in that there are some security gaps and therefore suggest a need of developing a new security framework for the converged web and mobile applications.","PeriodicalId":315622,"journal":{"name":"Proceedings of the 2nd Pan African International Conference on Science, Computing and Telecommunications (PACT 2014)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-07-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128652816","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 5

An overview of various propagation model for mobile communication 概述了移动通信的各种传播模型

Proceedings of the 2nd Pan African International Conference on Science, Computing and Telecommunications (PACT 2014) Pub Date : 2014-07-14 DOI: 10.1109/SCAT.2014.7055150

Michael S. Mollel, Michael Kisangiri

{"title":"An overview of various propagation model for mobile communication","authors":"Michael S. Mollel, Michael Kisangiri","doi":"10.1109/SCAT.2014.7055150","DOIUrl":"https://doi.org/10.1109/SCAT.2014.7055150","url":null,"abstract":"System's propagation characteristics through a medium is one of the important task to be done before planning and optimization of any network in order to estimate the signal parameter accurately for mobile system. Propagation analysis provides a good initial estimate of the signal characteristics .The ability to accurately predict radio-propagation behaviour for wireless personal communication system, such as cellular mobile radio, is becoming crucial to system design. This paper aim to address various propagation model used in planning and optimization of the network and much emphasize on empirical (statistical) models it address models limitation and its applicability. To validate the models, field measurements were carried out at different locations within Dar es Salaam and its environs. The measurements system consist of live radio base stations transmitting at 900/ 1800/2100 MHz Downlink signal strength level data were collected using drive test exercise. The respective path loss values were estimated and compared with existing model for rural, suburban and urban areas. The result indicated an appreciable inconsistency with the empirical models for all terrain areas.","PeriodicalId":315622,"journal":{"name":"Proceedings of the 2nd Pan African International Conference on Science, Computing and Telecommunications (PACT 2014)","volume":"5 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-07-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133305167","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 14

Peak to average power ratio analysis of a Constant Envelope Chirped OFDM 恒包络啁啾OFDM的峰值平均功率比分析

Proceedings of the 2nd Pan African International Conference on Science, Computing and Telecommunications (PACT 2014) Pub Date : 2014-07-14 DOI: 10.1109/SCAT.2014.7055152

M. Dida, M. Anjum, H. Huan

引用次数: 0