Sierra Leone's infrastructure : a continental perspective

Infrastructure development in Sierra Leone contributed about half a percentage point to the economy's per capita growth rate in 2003-07. But if Sierra Leone could upgrade its infrastructure to the level of the best performer in Africa, per capita growth rates could be boosted by more than three percentage points. After nine years of peace, economic activity is flourishing at every level in Sierra Leone. But the 11-year civil war destroyed the country's infrastructure, and rebuilding the road network and ports while improving the electrical, water, and telecommunications infrastructure is proving difficult. Looking ahead, expanding electrification is a top priority because current access levels, at only 1-5 percent of the urban population and 0 percent in rural areas, are impeding other development. The water and sanitation sector faces similar challenges, as only 1 percent of the rural population has access to piped water. Sierra Leone has been spending about $134 million annually on infrastructure in recent years. About$66 million is lost each year to inefficiencies. Comparing spending needs against existing spending and potential efficiency gains leaves an annual funding gap of $59 to$278 million per year. If savings from greater efficiency could be fully captured, Sierra Leone would not meet its posited infrastructure targets for another 30 years. Sierra Leone needs to make difficult decisions about the prioritization of infrastructure investments and must think strategically about bundling and sequencing investments for maximum returns.Transport Economics Policy&Planning,Infrastructure Economics,Energy Production and Transportation,Town Water Supply and Sanitation,Public Sector Economics

Burkina Faso's infrastructure : a continental perspective

Infrastructure contributed 1.3 percentage points to Burkina Faso's annual per capita gross domestic product (GDP) growth over the past decade, much of it due to improvements in information and communication technology (ICT). Raising the country's infrastructure endowment to that of the region's middle-income countries (MICs) could boost annual growth by more than 3 percentage points per capita. Burkina Faso has made significant progress developing its infrastructure in recent years, especially in the ICT sector. The country has also moved forward in the areas of road maintenance and water and sanitation, but still faces challenges in these sectors, as well as in the electricity sector. As of 2007, Burkina Faso faced an annual infrastructure funding gap of $165 million per year, or 4 percent of GDP. That gap could be cut in half by the adoption of more appropriate technologies to meet infrastructure targets in the transport and the water and sanitation sectors. Even if Burkina Faso were unable to increase infrastructure spending or otherwise close the infrastructure funding gap, simply by moving from a 10- to 18-year horizon the country could address its efficiency gap and meet the posited infrastructure targets.Transport Economics Policy&Planning,Infrastructure Economics,Town Water Supply and Sanitation,E-Business,Energy Production and Transportation

A review of key planning and scheduling in the rail industry in Europe and UK

Planning and scheduling activities within the rail industry have benefited from developments in computer-based simulation and modelling techniques over the last 25 years. Increasingly, the use of computational intelligence in such tasks is featuring more heavily in research publications. This paper examines a number of common rail-based planning and scheduling activities and how they benefit from five broad technology approaches. Summary tables of papers are provided relating to rail planning and scheduling activities and to the use of expert and decision systems in the rail industry.EPSR

Performance evaluation of a tracking system for intermodal traffic: an experimentation in the Tyrrhenian area

Monitoring shipments along intermodal chains is crucial to ensuring the fast, reliable and secure transport of goods. In this regard, the paper describes the results of a real-life tracking experimentation carried out in June 2018 in the Tyrrhenian area with a twofold objective: 1) to evaluate the performance of a state-of-art tracking system to effectively monitor Ro-Ro freight units moving along intermodal chains; 2) to get an objective view of the intermodal chains currently connecting the two main Italian islands to the mainland. The experimentation was performed by means of a tracking device using the GSM network for data connection and geographical position detection. In addition, the Automatic Identification System (AIS) data were used to improve positioning during navigation. Quantitative analyses carried out on the recorded tracking data revealed that a significant share of the total transport time of the monitored transport chains is unproductive time that goods spend waiting at the port and logistics nodes. From a technical point of view, the experimentation raised several problems of the tracking technology employed vis-à-vis real-time tracking, continuous monitoring, signal coverage and positioning accuracy. A discussion of the main detected limitations is provided in the paper along with some possible solutions to overcome them

Design and implementation for automated network troubleshooting using data mining

The efficient and effective monitoring of mobile networks is vital given the number of users who rely on such networks and the importance of those networks. The purpose of this paper is to present a monitoring scheme for mobile networks based on the use of rules and decision tree data mining classifiers to upgrade fault detection and handling. The goal is to have optimisation rules that improve anomaly detection. In addition, a monitoring scheme that relies on Bayesian classifiers was also implemented for the purpose of fault isolation and localisation. The data mining techniques described in this paper are intended to allow a system to be trained to actually learn network fault rules. The results of the tests that were conducted allowed for the conclusion that the rules were highly effective to improve network troubleshooting.Comment: 19 pages, 7 figures, International Journal of Data Mining & Knowledge Management Process (IJDKP) Vol.5, No.3, May 201

Advanced mobile network monitoring and automated optimization methods

The operation of mobile networks is a complex task with the networks serving a large amount of subscribers with both voice and data services, containing extensive sets of elements, generating extensive amounts of measurement data and being controlled by a large amount of parameters. The objective of this thesis was to ease the operation of mobile networks by introducing advanced monitoring and automated optimization methods. In the monitoring domain the thesis introduced visualization and anomaly detection methods that were applied to detect intrusions, mal-functioning network elements and cluster network elements to do parameter optimization on network-element-cluster level. A key component in the monitoring methods was the Self-Organizing Map. In the automated optimization domain several rule-based Wideband CDMA radio access parameter optimization methods were introduced. The methods tackled automated optimization in areas such as admission control, handover control and mobile base station cell size setting. The results from test usage of the monitoring methods indicated good performance and simulations indicated that the automated optimization methods enable significant improvements in mobile network performance. The presented methods constitute promising feature candidates for the mobile network management system.reviewe