High performance computing of explicit schemes for electrofusion jointing process based on message-passing paradigm

The research focused on heterogeneous cluster workstations comprising of a number of CPUs in single and shared architecture platform. The problem statements under consideration involved one dimensional parabolic equations. The thermal process of electrofusion jointing was also discussed. Numerical schemes of explicit type such as AGE, Brian, and Charlies Methods were employed. The parallelization of these methods were based on the domain decomposition technique. Some parallel performance measurement for these methods were also addressed. Temperature profile of the one dimensional radial model of the electrofusion process were also given

Creating a 21st Century national innovation system for a 21st Century Latvian economy

The Latvian economy made great strides in recovering from the economic shock of the early transition and the adverse aftereffects of the 1998 Russian financial crisis. Nevertheless, Latvia faces serious challenges to its future growth and prosperity despite these impressive achievements and the outward appearance of macroeconomic stability and economic progress. A wide variety of recent studies suggest that the Latvian economy is not particularly competitive and, even more worrisome, they indicate that Latvia is not well positioned to gain ground in the race for global competitiveness, prosperity, and rising standards of living. Most of Latvia's growth to date has come from one-off gains generated by structural reforms, privatization, and reallocating resources, not inexhaustible reservoirs of growth. Latvian enterprises will be able to sustain economic growth and create high wage jobs only by becoming internationally competitive, innovating, accumulating new knowledge and technology, and finding a high value added niche in the European and global division of labor. This paper is designed to help Latvian leaders develop a clear diagnosis of the innovation and competitiveness challenges facing Latvia as it prepares to enter the EU and, more important, design and implement policies and programs to ensure that Latvia reaps the maximum possible benefits from EU structural funds. Section II analyzes the current structure of Latvia's production, imports, and exports. Section III uses data from a number of competitiveness reports to benchmark Latvia's current progress against a number of comparator countries and to pinpoint Latvia's strengths and weaknesses as an innovative economy. Section IV offers a detailed list of potential policies and programs that could improve the competitiveness of Latvian enterprises and the efficiency of the Latvian National Innovation System. The recommendations include specific policies and programs to improve (1) the production of knowledge in Latvia, (2) the commercialization of technology produced by Latvian scientists, small companies, and research institutes, and (3) local firms'capacity to absorb, adapt, and adopt existing knowledge produced outside Latvia for use inside Latvia.ICT Policy and Strategies,Economic Theory&Research,Labor Policies,Environmental Economics&Policies,Agricultural Knowledge&Information Systems,Environmental Economics&Policies,Economic Theory&Research,Agricultural Knowledge&Information Systems,ICT Policy and Strategies,Banks&Banking Reform

Quantification of urban metabolism through coupling with the life cycle assessment framework:Concept development and case study

Cities now consume resources and produce waste in amounts that are incommensurate with the populations they contain. Quantifying and benchmarking the environmental impacts of cities is essential if urbanization of the world’s growing population is to occur sustainably. Urban metabolism (UM) is a promising assessment form in that it provides the annual sum material and energy inputs, and the resultant emissions of the emergent infrastructural needs of a city’s sociotechnical subsystems. By fusing UM and life cycle assessment (UM–LCA) this study advances the ability to quantify environmental impacts of cities by modeling pressures embedded in the flows upstream (entering) and downstream (leaving) of the actual urban systems studied, and by introducing an advanced suite of indicators. Applied to five global cities, the developed UM–LCA model provided enhanced quantification of mass and energy flows through cities over earlier UM methods. The hybrid model approach also enabled the dominant sources of a city’s different environmental footprints to be identified, making UM–LCA a novel and potentially powerful tool for policy makers in developing and monitoring urban development policies. Combining outputs with socioeconomic data hinted at how these forces influenced the footprints of the case cities, with wealthier ones more associated with personal consumption related impacts and poorer ones more affected by local burdens from archaic infrastructure

Traffic matrix estimation on a large IP backbone: a comparison on real data

This paper considers the problem of estimating the point-to-point traffic matrix in an operational IP backbone. Contrary to previous studies, that have used a partial traffic matrix or demands estimated from aggregated Netflow traces, we use a unique data set of complete traffic matrices from a global IP network measured over five-minute intervals. This allows us to do an accurate data analysis on the time-scale of typical link-load measurements and enables us to make a balanced evaluation of different traffic matrix estimation techniques. We describe the data collection infrastructure, present spatial and temporal demand distributions, investigate the stability of fan-out factors, and analyze the mean-variance relationships between demands. We perform a critical evaluation of existing and novel methods for traffic matrix estimation, including recursive fanout estimation, worst-case bounds, regularized estimation techniques, and methods that rely on mean-variance relationships. We discuss the weaknesses and strengths of the various methods, and highlight differences in the results for the European and American subnetworks

Infrastructure and Growth in South Africa: Benchmarking, Productivity and Investment Needs, paper presented at Economic Society of South Africa (ESSA) Conference, Durban, 9/7-9/2005

The paper provides three principal results. First, we benchmark South African infrastructure performance in terms of access, pricing, and quality against key comparator groups of countries using the most recent World Bank benchmarking data base (2005). Second, we establish clear empirical links between infrastructure and productivity using South African time-series data. And third, we estimate long-run demand for electricity and telephony using a panel of 52 low-income and middle- income countries for the period 1980-2002 and then project investment needs in these sectors until 2010. Our projections indicate average annual electricity generating requirement of US$0.5 billion or about 0.2$1.98 billion or 0.75% of GDP for telephony.infrastructure, growth, productivity, investment, South Africa

Global Innovation Policy Index

Ranks fifty-five nations' strategies to boost innovation capacity: policies on trade, scientific research, information and communications technologies, tax, intellectual property, domestic competition, government procurement, and high-skill immigration

Export diversification and resource-based industrialization: the case of natural gas

For resource-rich economies, primary commodity specialization has often been considered to be detrimental to growth. Accordingly, export diversification policies centered on resource-based industries have long been advocated as effective ways to moderate the large variability of export revenues. This paper discusses the applicability of a mean-variance portfolio approach to design these strategies and proposes some modifications aimed at capturing the key features of resource processing industries (presence of scale economies and investment lumpiness). These modifications help make the approach more plausible for use in resource-rich countries. An application to the case of natural gas is then discussed using data obtained from Monte Carlo simulations of a calibrated empirical model. Lastly, the proposed framework is put to work to evaluate the performances of the diversification strategies implemented in a set of nine gas-rich economies. These results are then used to formulate some policy recommendations