Real-time programmable acoustooptic synthetic aperture radar processor

The acoustooptic time-and-space integrating approach to real-time synthetic aperture radar (SAR) processing is reviewed, and novel hybrid optical/electronic techniques, which generalize the basic architecture, are described. The generalized architecture is programmable and has the ability to compensate continuously for range migration changes in the parameters of the radar/target geometry and anomalous platform motion. The new architecture is applicable to the spotlight mode of SAR, particularly for applications in which real-time onboard processing is required

The privatization of the Russian coal industry: policies and processes in the transformation of a major industry

This paper provides an overview of the privatization of the Russian coal industry. It reviews the salient aspects of the Government's privatization policy as it evolved over the years, and looks at the reasons for the successes and the pitfalls encountered along the way. Specific procedures and methods of sale are described in detail. A profile of the new owners of the industry is given, with a look at the implications for competition in the industry and at first performance indicators. As the World Bank has been closely involved in the support of the Government's coal sector restructuring program through provision of financing and policy advice, throughout the paper aspects of World Bank advice are considered.Municipal Financial Management,Banks&Banking Reform,Non Bank Financial Institutions,Environmental Economics&Policies,Water and Industry,Water and Industry,Non Bank Financial Institutions,Mining&Extractive Industry (Non-Energy),Banks&Banking Reform,Municipal Financial Management

Mine closure and its impact on the community : five years after mine closure in Romania, Russia and Ukraine

Against the backdrop of economic transition, several countries in Eastern Europe have undertaken far-reaching programs to restructure their coal sectors, which in the 1990s were in a state of deep crisis. One aspect of restructuring has been the closure of loss-making mines, which are often located in communities where the coal industry is the dominant employer, and the significant downsizing of the workforce. Mitigation efforts that are implemented at the time of mine closure (such as severance payments) are usually intended only for the laid-off workers. The authors examine the impact of mine closure on the entire community five years after mine closure in Romania, Russia, and Ukraine. Using quantitative and qualitative research methods and based on interviews with national, regional, and local experts, and members of the affected population, the authors describe the effect of mine closure and evaluate the various mitigation efforts that have been used by governments in such cases. They conclude with policy recommendations of broad relevance to programs of industrial restructuring in communities dominated by a single industry.Mining&Extractive Industry (Non-Energy),Municipal Financial Management,Environmental Economics&Policies,Banks&Banking Reform,Public Health Promotion,Municipal Financial Management,Health Monitoring&Evaluation,Mining&Extractive Industry (Non-Energy),Banks&Banking Reform,Environmental Economics&Policies

What affects the Russian regional governments'propensity to subsidize?

Subsidies funded by Russia's regional governments represented about 5.2 percent of GDP in 1995, almost triple the 2 percent of GDP in subsidies funded by the federal government. Regional policies vary greatly, influenced more by local factors than by the federal government. To find out what affects the regional governments'propensity to subsidize, the authors examined available data for 1992-95, asking: How great is the variation across regions in the incidence of subsidies, and what are recent trends in such variation? What are the relative influences of supply and demand factors in shaping the current levels of subsidy? How do federal budget transfers affect regionally funded subsidies to local enterprises? To what extent are federal transfers distortionary, encouraging subsidies and postphoning the liberalization of local markets? Their findings: 1) Regional wealth and federal budget transfers to regional governments are two of the most important determinants of regional propensity to subsidize. 2) Even when regional budgetary wealth is controlled for, depressed regions (those affected most by industrial decline and unemployment) tend to spend less on subsidies than regions with more favorable economies. 3) Federal budget transfers are quite distortionary, that is, they encourage regional governments to continue subsidy policies and postpone structural reforms. In fact, federal transfers tend to be concerned in regions with the most distortionary policies. 4) Housing receives the lion's share of total regional subsidies, and there are greater disparities in housing subsidies than in agricultural subsidies. 5) Housing and transportation subsidies are strongly counter-equalizing: Households in wealthier regions receive more in housing subsidies and rural populations have less access to those subsidies, so up to 30 percent of regional subsidies are questionable in terms of equity. 6) Federal transfers have less effect on regional subsidies in agriculture, which are influenced more by the region's own tax base and its share of rural population or by such factors as the political influence of local interest groups. 7) To accelerate structural reforms, the federal government might consider reducing the number of recipients of federal budget transfers and changing the rules of allocation of the transfers, in particular by introducing conditional transfers linked to increases in cost recovery.Economic Theory&Research,Banks&Banking Reform,Municipal Financial Management,Public Sector Economics&Finance,Environmental Economics&Policies,Banks&Banking Reform,Municipal Financial Management,Public Sector Economics&Finance,Environmental Economics&Policies,Economic Theory&Research

New Models of Public Ownership in Energy

This paper discusses some of the new and continuing ways in which the public sector is involved in the electricity / energy sector around the world. This involvement continues to be significant in spite of the longrunning trend towards privatisation, competition and independent regulation in the energy sector. We discuss why the theoretical case for public ownership might be more attractive now than in the recent past. We then discuss six case studies of modern public ownership drawn from the UK (Great Britain and Northern Ireland), Denmark, New Zealand, Finland and Chile. The investments covered include wind and nuclear power, LNG facilities, electricity and gas distribution investments and energy service companies for combined heat and power. We conclude with some outstanding questions raised by the apparently favourable conditions for increased public involvement in energy.ESR

Modular AWG-based Optical Shuffle Network

This paper proposes an arrayed-waveguide grating (AWG) based wavelength-division-multiplexing (WDM) shuffle network. Compared with previous optical shuffle networks, our proposal is compact, easy to implement, highly scalable, and cost effective

Ungulate Damage to Safflower in San Juan County, Utah

In Utah, farmers are concerned that ungulates are damaging safflower (Carthamus tinctorius) fields. I examined elk (Cervus elaphus) and mule deer (Odocoileus hemionus) damage to safflower production in San Juan County, Utah during 2009 and 2010. Data on damaged safflower plants were collected within 28 fields, totaling 1,581 ha (13 fields totaling 963 ha during 2009; 15 fields totaling 618 ha during 2010). I compared 3 methods to assess losses: ungulate-proof exclosures, adjacent plant compensation method, and counting the number of damaged plants in 50-m transects (safflower count method). Exclosures were of limited use because they could not be erected until farmers stopped using cultivating their fields. Hence, this method did not account for ungulate damage to young plants. The adjacent plant compensation method assessed yields within 1 m of a randomly-selected damaged plant to account for any compensatory growth of neighboring plants but this method proved inaccurate because ungulate herbivory was concentrated so that a browsed plant was often surrounded by other browsed plants so no compensatory growth by surrounding plants occurred. The most accurate method was the safflower count method which determined the number of damaged plants within a field and then multiplied this number by the decrease in yield from an average damaged plant. I used this method to examine 981,000 plants for damage. Deer and elk damaged or killed 7.2% of safflower plants during 2009 and 1.4% of plants during 2010. Overall yield reduction was 2.9% during 2009 and 0.6% in 2010. The total value of safflower loss within all surveyed fields in 2009 was $9,023 for a loss of$9.42 / ha. The loss of value within surveyed fields in 2010 was $2,330, or$3.77 / ha. The best model for predicting ungulate damage in 2009 included distance to canyon from field edge and the percent of a field bordered by a fallow field, while the best model for 2010 included distance to canyon from field edge and the percent of a field bordered by a wheat field. Safflower farmers were surveyed in the spring of 2010 to compare perceived losses in their fields during 2009 to those measured in this study. Farmers believed that damage by deer and elk reduced their yields by 20% with most damage caused by elk (x¯ =12% by elk, 7% by deer, 1% by other wildlife). On average, perceptions of damage were 5.2 times higher than the actual levels I measured during 2009. This was not surprising because farmers usually surveyed their field from the field’s edge and ungulate damage was concentrated along the edge of the fields

Bridging the Gap between Testing and Technology in Schools

The widening gap between the increased use of technology in schools and the absence of computers in state-level testing programs raises important implications for policies related to the use of both technology and testing in schools. In this article, we summarize recent developments in the use of technology in schools and in state level testing programs. We then describe two studies indicating that written tests administered on paper underestimate the achievement of students accustomed to working on computers. We conclude by discussing four approaches to bridging the gap between technology and testing in U.S. schools

The role of glia in protein aggregation

Protein aggregation diseases involve intracellular accumulation or extracellular deposition of certain protein species in neuronal or glial cells, leading to neurodegeneration and shortened lifespan. Prime examples include Alzheimer\u27s disease (AD), Parkinson\u27s disease (PD), amyotrophic lateral sclerosis (ALS), and Huntington\u27s disease (HD), which are affected by overlapping or specific aggregation-prone proteins. Mounting evidence suggests that dysfunctional glial cells may be major drivers for some diseases, and when they are not causal factors, they could still significantly exacerbate or alleviate disease progression by playing a plethora of detrimental or beneficial roles. Here we review the diverse functions performed by glial cells in a variety of protein aggregation diseases, highlighting the complexity of the issue and the interconnected relationships between these multifaceted effects

Prototype of Fault Adaptive Embedded Software for Large-Scale Real-Time Systems

This paper describes a comprehensive prototype of large-scale fault adaptive embedded software developed for the proposed Fermilab BTeV high energy physics experiment. Lightweight self-optimizing agents embedded within Level 1 of the prototype are responsible for proactive and reactive monitoring and mitigation based on specified layers of competence. The agents are self-protecting, detecting cascading failures using a distributed approach. Adaptive, reconfigurable, and mobile objects for reliablility are designed to be self-configuring to adapt automatically to dynamically changing environments. These objects provide a self-healing layer with the ability to discover, diagnose, and react to discontinuities in real-time processing. A generic modeling environment was developed to facilitate design and implementation of hardware resource specifications, application data flow, and failure mitigation strategies. Level 1 of the planned BTeV trigger system alone will consist of 2500 DSPs, so the number of components and intractable fault scenarios involved make it impossible to design an `expert system' that applies traditional centralized mitigative strategies based on rules capturing every possible system state. Instead, a distributed reactive approach is implemented using the tools and methodologies developed by the Real-Time Embedded Systems group.Comment: 2nd Workshop on Engineering of Autonomic Systems (EASe), in the 12th Annual IEEE International Conference and Workshop on the Engineering of Computer Based Systems (ECBS), Washington, DC, April, 200