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  • Articles  (23)
  • Environmental impact assessment  (9)
  • fusion-fission hybrids  (6)
  • Agriculture  (4)
  • Decision analysis  (4)
  • 1980-1984  (23)
  • 1950-1954
  • 1940-1944
  • Energy, Environment Protection, Nuclear Power Engineering  (23)
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  • Articles  (23)
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  • 1
    Electronic Resource
    Electronic Resource
    Springer
    Journal of fusion energy 1 (1981), S. 197-210 
    ISSN: 1572-9591
    Keywords: fusion-fission hybrids ; fusion reactor safety ; weapons proliferation ; radioactive wastes ; activation products ; fission product transmutation ; uranium-233
    Source: Springer Online Journal Archives 1860-2000
    Topics: Energy, Environment Protection, Nuclear Power Engineering
    Notes: Abstract The rationale for developing hybrids depends on real or perceived liabilities of relying on pure fission to do the same job. Quite possibly the main constraint on expanded use of fission will be neither lack of fuel nor high costs, but perceived environmental liabilities—radioactive wastes, reactor safety, and links to nuclear weaponry. The environmental characteristics of hybrid systems and pure-fission systems are compared here in detail. The findings are that significant environmental advantages for hybrids cannot now be demonstrated and may not exist. Therefore, if environmental drawbacks constrain the application of pure fission, hybrids probably also will be thus constrained.
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  • 2
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    Journal of fusion energy 3 (1983), S. 81-93 
    ISSN: 1572-9591
    Keywords: cost/benefit ; fusion-fission hybrids ; present worth
    Source: Springer Online Journal Archives 1860-2000
    Topics: Energy, Environment Protection, Nuclear Power Engineering
    Notes: Abstract A simple algorithm was developed that allows rapid computation of the ratio,R, of present worth of benefits to present worth of hybrid R&D program costs as a function of potential hybrid unit electricity cost savings, discount rate, electricity demand growth rate, total hybrid R&D program cost, and time to complete a demonstration reactor. In the sensitivity study, these variables were assigned nominal values (unit electricity cost savings of 4 mills/kW-hr, discount rate of 4%/year, growth rate of 2.25%/year, total R&D program cost of $20 billion, and time to complete a demonstration reactor of 30 years), and the variable of interest was varied about its nominal value. Results show thatR increases with decreasing discount rate and increasing unit electricity savings and ranges from 4 to 94 as discount rate ranges from 5 to 3%/year and unit electricity savings range from 2 to 6 mills/kW-hr.R increases with increasing growth rate and ranges from 3 to 187 as growth rate ranges from 1 to 3.5%/year and unit electricity cost savings range from 2 to 6 mills/kW-hr.R attains a maximum value when plotted against time to complete a demonstration reactor. The location of this maximum value occurs at shorter completion times as discount rate increases, and this optimal completion time ranges from 20 years for a discount rate of 4%/year to 45 years for a discount rate of 3%/year.
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  • 3
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    Springer
    Environmental management 5 (1981), S. 507-513 
    ISSN: 1432-1009
    Keywords: Environmental impact assessment ; Environmental management ; Mitigation measures ; Enforcement
    Source: Springer Online Journal Archives 1860-2000
    Topics: Energy, Environment Protection, Nuclear Power Engineering
    Notes: Abstract Until recently, relatively little attention has been paid to the problem of enforcing mitigation measures identified in environmental impact assessment. Present or proposed enforcement systems in the USA, New South Wales, South Australia, and Western Australia are described and discussed. Although the best enforcement system would depend on the local social, political, and legal systems, five universally desirable features are identified. First, a comprehensive coordinated monitoring and reassessment system is needed. Second, the agencies concerned must have adequate resources to do the work and incentives to carry it out well. Third, there must be the necessary legal powers. Fourth, provision must be made for changing the conditions based on experience. And fifth, the system should be equally effective against private companies and public authorities.
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  • 4
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    Environmental management 6 (1982), S. 43-54 
    ISSN: 1432-1009
    Keywords: NEPA ; Environmental impact assessment ; Field experiments ; Air pollution ; Soil pollution ; Wildlife disturbance
    Source: Springer Online Journal Archives 1860-2000
    Topics: Energy, Environment Protection, Nuclear Power Engineering
    Notes: Abstract The National Environmental Policy Act of 1969 (NEPA) was initially interpreted as requiring full disclosure of the environmental impact of a federal action. Because of the limitations of time, money, and manpower, the requirement that all impacts be considered has led to superficial analysis of many important impacts. Data collection has largely been limited to the enumeration of species because this information can be applied to the analysis of any problem. The President's Council on Environment Quality (CEQ) has provided a solution to this problem by reinterpreting NEPA as requiring analysis of those impacts that have significant bearing on decision making. Because assessment resources can now be concentrated on a few critical issues, it should be possible to perform field perturbation experiments to provide direct evidence of the effects of a specific mixture of pollutants or physical disturbances on the specific receiving ecosystem. Techniques are described for field simulation of gaseous and particulate air pollution, polluted rain, soil pollutants, disturbance of the soil, and disturbance of wildlife. These techniques are discussed in terms of their realism, cost, and the restrictions that they place on the measurement of ecological parameters. Development and use of these field perturbation techniques should greatly improve the accuracy of predictive assessments and further our understanding of ecosystem processes.
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  • 5
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    Environmental management 6 (1982), S. 517-526 
    ISSN: 1432-1009
    Keywords: Fuel treatment ; Fuel appraisal ; Decision analysis ; Forest fires
    Source: Springer Online Journal Archives 1860-2000
    Topics: Energy, Environment Protection, Nuclear Power Engineering
    Notes: Abstract Potential increase in fire hazard as a result of timber harvesting is a concern of forest managers throughout the United States. Treating fuels can help reduce unacceptable fire hazards. To evaluate alternative fuel treatments, managers need to know their effects on fire hazard. A decision analysis approach to estimating fire hazard in terms of expected burned area was applied to a watershed in the Siskiyou National Forest (Oregon). Three treatment alternatives (do nothing and two levels of yarding unmerchantable material) were evaluated, and the effects of the treatments were projected over a 90-yr period. Initially, the effects of applying a treatment are small. After 50 years of treatment, the most intense alternative can be expected to show almost a 50% reduction in burned area compared to no treatment. The procedure also estimates burned are by fire size and fire intensity classes. Managers may find this useful for estimating expected fire effects associated with a particular fuel treatment regime.
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  • 6
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    Environmental management 4 (1980), S. 21-25 
    ISSN: 1432-1009
    Keywords: Environmental impact assessment ; Geographic information system ; Land use capabilities ; Canada ; Glengowan Dam
    Source: Springer Online Journal Archives 1860-2000
    Topics: Energy, Environment Protection, Nuclear Power Engineering
    Notes: Abstract The analytical structure of environmental impact assessment is continually changing as the applicability of established techniques from other fields and the development of novel methods become known. This paper illustrates the applicability of using existing data bases, through a geographic information system, for theex ante evaluation of land use disruption. More specifically, the Canada Geographic Information System was employed to retrieve, to analyze, and to produce land capability statistics and land use maps for the proposed Glengowan dam and reservoir.
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  • 7
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    Environmental management 4 (1980), S. 3-6 
    ISSN: 1432-1009
    Keywords: Decision analysis ; Environmental decisions ; Quantitative methods ; Policy analysis
    Source: Springer Online Journal Archives 1860-2000
    Topics: Energy, Environment Protection, Nuclear Power Engineering
    Notes: Abstract Value functions are devices that allow discrete analyses of environmental impacts to be reconciled to a single quantitative scale of preference. The values obtained can then be “weighted” and combined into measures of the relative desirability of policy alternatives. However, for this methodology to be valid, the set of impacts used must satisfy a number of conditions; and whether or not these are met depends on how the impacts are selected and characterized. This paper generalizes instances where the conditions may be violated and how they may be resolved, and concludes with a few thoughts on how the methodology might be adapted to the routine of bureaucracy.
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  • 8
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    Environmental management 6 (1982), S. 1-7 
    ISSN: 1432-1009
    Keywords: Natural resource planning ; Development ; Policy analysis ; Industrial siting ; Environmental impact assessment
    Source: Springer Online Journal Archives 1860-2000
    Topics: Energy, Environment Protection, Nuclear Power Engineering
    Notes: Abstract The problem of management of industrial residuals can be reduced through a rational system for siting and planning major industrial facilities. In the United States, Wyoming has moved in the direction of establishing a one-stop permitting system that provides important information for air and water quality planning and solid waste management with a minimum of regulatory overlap. This paper describes Wyoming's Industrial Development Information and Siting Act of 1975 and suggests ways in which the Wyoming permitting system can be improved and applied elsewhere.
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  • 9
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    Environmental management 7 (1983), S. 177-187 
    ISSN: 1432-1009
    Keywords: Nitrogen ; Model ; Agriculture ; Mass balance ; Ground-water ; Denitrification ; Immobilization ; Dry deposition ; Nitrogen fixation ; Nitrate ; Florida
    Source: Springer Online Journal Archives 1860-2000
    Topics: Energy, Environment Protection, Nuclear Power Engineering
    Notes: Abstract A detailed nitrogen budget was devised for agricultural activities in the Florida peninsula, based on routine data published by state agricultural agencies. The model demonstrates that important unmonitored fluxes of nitrogen can often be calculated by mass balance on individual model compartments, and that the reasonability of poorly quantified fluxes can be assessed. The results of such models can be very useful in designing and assessing the results of field experiments and in prioritizing environmental monitoring programs.
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  • 10
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    Environmental management 8 (1984), S. 67-74 
    ISSN: 1432-1009
    Keywords: Oil spill modeling ; Fish population dynamics ; Environmental impact assessment
    Source: Springer Online Journal Archives 1860-2000
    Topics: Energy, Environment Protection, Nuclear Power Engineering
    Notes: Abstract In the management of conflicting dual-resource systems such as continental shelf hydrocarbon extraction and commercial fishing operations, it is necessary to consider the possibility of repeated impact events. The potential magnitude of impacts on Georges Bank fisheries of single oil spill events has been addressed in detail elsewhere (Reed and Spaulding 1979, Reed and others 1980, Spaulding and others 1982). An oil spill-fishery impact estimation model, implemented for the Georges Bank cod fishery (Reed and others 1980), has been used to investigate the potential for nonlinear biological responses to periodic and nonperiodic repetitive spill events. Prerecruit mortality equations incorporating young-of-the-year as well as adult-juvenile interactions, perform acceptably vis-à-vis the historical catch record, but show highly variable behavior under recruitment reductions induced by periodic simulated spills. The results demonstrate the importance of selecting mathematical representations of biological and physical processes underlying population dynamics such that characteristic system behavior is adequately represented in both the time and frequency domains.
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  • 11
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    Environmental management 6 (1982), S. 493-504 
    ISSN: 1432-1009
    Keywords: Behavioral interactions ; Concordance analysis ; Delphi method ; Goals Achievement Matrix ; NGT method ; Simple multi-attribute rating technique ; Decision making ; Decision analysis ; Policy making
    Source: Springer Online Journal Archives 1860-2000
    Topics: Energy, Environment Protection, Nuclear Power Engineering
    Notes: Abstract The two major processes of decision making, behavioral interactions and decision analysis, are discussed. Comparisons are made between the Delphi and NGT methods of behavioral interaction. Three different types of decision analysis are compared, including the Goals Achievement Matrix, Concordance Analysis, and the Simple Multi-Attribute Rating Technique. Decision making problems characteristic of environmental studies are reviewed. A method of decision making that combines the best qualities of other methods is suggested. The overall purpose of this paper is to make the technical knowledge of decision making useful to environmentalists, businessmen, citizens, and politicians, and to improve the process of policy making in environmental studies.
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  • 12
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    Environmental management 8 (1984), S. 1-13 
    ISSN: 1432-1009
    Keywords: Guild concept ; Birds ; Environmental impact assessment ; Monitoring
    Source: Springer Online Journal Archives 1860-2000
    Topics: Energy, Environment Protection, Nuclear Power Engineering
    Notes: Abstract Alternative ways to apply the guild concept to wildlife management are evaluated here. I reject the idea that indicator species can be selected for each bird guild to reduce costs of environmental assessment and monitoring. Promise is seen, however, in the option of using whole guilds to indicate the capability of habitat zones to support populations of wildlife species. It may be adequate for most management purposes to delineate guilds only for species that use an environment for breeding, because transients and winter residents probably use the same zones of the habitat in the same ways. Potential guilds are identified by cells of a two-dimensional matrix, the axes identifying primary feeding and nesting zones. Some questions may be answered with guilds as delineated by all cells in the matrix. Alternatively, larger guilds can be formed by grouping all species in each column or row of the matrix to identify, for example, all species that depend on tree canopies for foraging, or tree boles for nesting. One can also consider separately the resident breeders, migrant breeders, and winter residents to obtain insights into whether observed changes in numbers of birds in a guild are a result of conditions locally or elsewhere. I conclude that the guild concept probably has a place in wildlife management, but much testing must be done before it is widely applied.
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  • 13
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    Environmental management 7 (1983), S. 253-261 
    ISSN: 1432-1009
    Keywords: Environmental management ; Legislation ; Environmental impact assessment
    Source: Springer Online Journal Archives 1860-2000
    Topics: Energy, Environment Protection, Nuclear Power Engineering
    Notes: Abstract In Australia many major developments are authorized by agreements negotiated between companies and the state government and ratified by Parliament as Agreement Acts The means by which these are negotiated and ratified, their terms, and their legal status are thus of great importance to Australian resource and environmental management These aspects are examined, revealing a lessening of the tendency to provide special rights and privileges and a trend towards the inclusion of more resource and environmental management provisions in the Acts It is argued that major developments require special conditions beyond the scope of general laws in order to control their social and environmental side effects, and that Agreements Acts could be a valuable means to this end Ways of improving them from this point of view are discussed
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  • 14
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    Environmental management 8 (1984), S. 191-196 
    ISSN: 1432-1009
    Keywords: Environmental impact assessment ; Environmental impact statements ; Report preparation ; Consultants
    Source: Springer Online Journal Archives 1860-2000
    Topics: Energy, Environment Protection, Nuclear Power Engineering
    Notes: Abstract The practice of EIA preparation in a number of states and countries is reviewed in the light of the need to avoid bias, integrate the EIA with project design, and make the proponent pay. It is concluded that the best arrangement may be to make the proponent responsible for EIA preparation and to advise a number of constraints designed to improve the quality of the studies and reduce bias. First, the proponent should be required to select a consultant from a register of those known to be honest, unbiased, technically competent, and capable of working with a design team. Second, two steering committees should be established to identify key issues, specify data collection and modeling programs and methods, and ensure that the study stays on course.
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  • 15
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    Environmental management 6 (1982), S. 103-108 
    ISSN: 1432-1009
    Keywords: Chemicals ; Cost-benefit analysis ; Environment ; Environmental impact assessment ; Judgment ; Land use planning ; Objective ; Regulation ; Subjective ; Toxicity
    Source: Springer Online Journal Archives 1860-2000
    Topics: Energy, Environment Protection, Nuclear Power Engineering
    Notes: Abstract Objective judgments, external to the judge, are compared with subjective, internal judgments. This analysis is made in the context of reaching regulatory decisions affecting the human environment. Examples given include evaluating the potential risk of industrial chemicals and comparing the potential effects of short- and long-term changes in land use. The analysis deals not with the decisions themselves, but rather with the kinds of questions that must be posed in orderto reach such decisions. Decision makers may spuriously distinguish objective from subjective types of judgment, though these are rarely wholly separate. Judges can hardly dispute about objective statements, if truly identical definitions are used. But subjective statements can reasonably be voted upon. Scientists, engineers, and economists represent logical or objective decision makers, tending to work in groups. Subjective thinkers include artists and performers, and others who often work alone. Moral and aesthetic aspects of questions, usually seen as intangible, are treated as if subjective. Financial decisions, usually viewed as tangible, are handled as objective problems. This mechanism for making decisions is well-established in environmental assessment. Though objective questions can be treated well in the monetary terms of cost-benefit analysis, subjective ones cannot. Mathematical and other variants are discussed in relation to the comparison of alternative types of tests.
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  • 16
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    Environmental management 7 (1983), S. 101-107 
    ISSN: 1432-1009
    Keywords: Endangered species ; Decision analysis ; Isotria medeoloides ; Preserve selection
    Source: Springer Online Journal Archives 1860-2000
    Topics: Energy, Environment Protection, Nuclear Power Engineering
    Notes: Abstract Many species face extinction because preservation organizations do not have the resources to mount all of the interventions that are needed. Decision analysis provides techniques that can help managers of these organizations to make judgments about which species they will attempt to rescue. A formal analysis of the choices available to the US Fish and Wildlife Services' endangered species program with regard toIsotria medeoloides illustrates how the difficulties of making preservation decisions can be lessened.I. medeoloides is perhaps the rarest orchid in the United States. Little is known of the species' biology and less about effective management. Yet unless a preservation effort is mounted, the species will continue to be threatened by habitat destruction and botanical collecting. The analysis employs formal probabalistic techniques to weigh the utility of possible intervention strategies, that is, their likelihood of achieving different amounts of increase in the longevity of the species, and to balance these gains against their costs. If similar decision analyses are performed on other endangered species, the technique can be used to choose among them, as well as among strategies for individual species.
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  • 17
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    Environmental management 8 (1984), S. 333-343 
    ISSN: 1432-1009
    Keywords: Agriculture ; Benthic macroinvertebrates ; Erosion control ; Sediment ; Water quality
    Source: Springer Online Journal Archives 1860-2000
    Topics: Energy, Environment Protection, Nuclear Power Engineering
    Notes: Abstract Agricultural runoff affects many streams in North Carolina. However, there is is little information about either its effect on stream biota or any potential mitigation by erosion control practices. In this study, benthic macroinvertebrates were sampled in three different geographic areas of North Carolina, comparing control watersheds with well-managed and poorly managed watersheds. Agricultural streams were characterized by lower taxa richness (especially for intolerant groups) and low stability. These effects were most evident at the poorly managed sites. Sedimentation was the apparent major problem, but some changes at agricultural sites implied water quality problems. The groups most intolerant of agricultural runoff were Ephemeroptera, Plecoptera and Trichoptera. Tolerant species were usually filter-feeders or algal grazers, suggesting a modification of the food web by addition of particulate organic matter and nutrients. This study clearly indicates that agricultural runoff can severely impact stream biota. However, this impact can be greatly mitigated by currently recommended erosion control practices.
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  • 18
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    Journal of fusion energy 1 (1981), S. 163-183 
    ISSN: 1572-9591
    Keywords: fusion ; fusion-fission hybrids ; hybrids ; gas-cooling ; helium
    Source: Springer Online Journal Archives 1860-2000
    Topics: Energy, Environment Protection, Nuclear Power Engineering
    Notes: Abstract In this paper, the concept of the fusion-fission hybrid reactor is reviewed, and a system of classification for hybrid blanket designs is suggested. The advantages and disadvantages of gas cooling for hybrid reactor systems are discussed and the design implications of using gas cooling in a hybrid blanket are presented. Five of the more complete gas-cooled hybrid reactor conceptual design studies are discussed, and the fission-suppressed hybrid blanket concept is identified as offering potentially significant advantages in terms of inherent safety features and reduced technology development requirements compared to higher power fission blankets. It is concluded that helium is attractive as the coolant for hybrid reactor systems, and that technically viable reactor designs have been developed using helium cooling. The helium-cooled fission-suppressed hybrid blanket, based on thorium fuel for production of233U, is identified as being a particularly attractive candidate for further hybrid reactor development work.
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  • 19
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    Journal of fusion energy 2 (1982), S. 369-373 
    ISSN: 1572-9591
    Keywords: Fusion ; fusion-fission hybrids ; advanced nuclear systems ; uranium supply
    Source: Springer Online Journal Archives 1860-2000
    Topics: Energy, Environment Protection, Nuclear Power Engineering
    Notes: Abstract A summary is given of recently completed and planned fusion-fission hybrid projects. Electricity supply/demand projections and estimates of future uranium requirements for several different combinations of nuclear systems, including hybrids, are discussed.
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  • 20
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    Journal of fusion energy 2 (1982), S. 181-196 
    ISSN: 1572-9591
    Keywords: fusion-fission hybrids ; deuterium fueled fusion reactors ; D-D reactions ; D-3He fusion reactions ; thermonuclear fusion ; parent-satellite nuclear energy systems
    Source: Springer Online Journal Archives 1860-2000
    Topics: Energy, Environment Protection, Nuclear Power Engineering
    Notes: Abstract Selected reactor physics and isotope balance characteristics of a fusion hybrid supported D-3He satellite nuclear energy system are formulated and investigated. The system consists of two types of reactors: a parent D-fueled fusion device and a number of smaller reactors optimized for D-3He fusion. The parent hybrid station breeds the helium-3 for the satellites and also breeds fissile fuel for an existing fission reactor economy. Various hybrid operational regimes are examined in order to determine favorable reactorQ values and effective fusion and fission efficiencies. A number of analytical correlations between power output, plasma energetics, blanket neutronics, breeding capacity, and energy conversion cycles are established and evaluated. Numerical examples of performance parameters such as fission-to-fusion power, overall conversion efficiency, and the ratio of satellite to parent fusion power are presented. The range of reactor efficiencies is elucidated as affected by the internal plasma power balances. As an upper bound based on optimistic injection and direct conversion efficiencies, we find the D-3He satellite system power output attaining at best 1/3 of the parent fusion power.
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  • 21
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    Journal of fusion energy 1 (1981), S. 185-196 
    ISSN: 1572-9591
    Keywords: nuclear fusion ; fissile fuel production ; nuclear fuel production ; fusion-fission hybrids ; future nuclear fuel resources
    Source: Springer Online Journal Archives 1860-2000
    Topics: Energy, Environment Protection, Nuclear Power Engineering
    Notes: Abstract The use of nuclear fusion to produce fuel for nuclear fission power stations is discussed in the context of a crucial need for future energy options. The fusion hybrid is first considered as an element in the future of nuclear fission power to provide long term assurance of adequate fuel supplies for both breeder and convertor reactors. Generic differences in neutronic characteristics lead to a fuel production potential of fusion-fission hybrid systems which is significantly greater than that obtainable with fission systems alone. Furthermore, cost benefit studies show a variety of scenarios in which the hybrid offers sufficient potential to justify development costs ranging in the tens of billions of dollars. The hybrid is then considered as an element in the ultimate development of fusion electric power. The hybrid offers a near term application of fusion where experience with the requisite technologies can be derived as a vital step in mapping a credible route to eventual commercial feasibility of “pure” fusion systems. Finally, the criteria for assessment of future energy options are discussed with prime emphasis on the need for rational comparison of alternatives. This approach is contrasted with the dual standard too often used in judging the risks and benefits of nuclear power where, for example, rather minor radiological effects are highlighted while much larger exposures to radiation from medical x-rays, airplane travel, color television sets, etc., are ignored. It is concluded that the fusion hybrid deserves a prominent place among new energy resources but that early attention to insure an adequately informed public is a vital ingredient in assuring reasonable prospects of success.
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  • 22
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    Human ecology 11 (1983), S. 1-12 
    ISSN: 1572-9915
    Keywords: Agriculture ; cultural ecology ; South America ; intercropping ; diversity
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Energy, Environment Protection, Nuclear Power Engineering , Ethnic Sciences
    Notes: Abstract Results of recent ethnographic research in indigenous agricultural systems in the South American tropical forests indicate that the Geertzian model of the highly intercropped swidden that mimics the tropical forest it replaces is not the appropriate description of the agricultural regimes of several rainforest peoples. A model is proposed relating degree of intercropping to amount of agricultural labor.
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  • 23
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    Human ecology 11 (1983), S. 85-101 
    ISSN: 1572-9915
    Keywords: Agriculture ; swidden ; diversity ; intercropping ; South America
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Energy, Environment Protection, Nuclear Power Engineering , Ethnic Sciences
    Notes: Abstract The proposition that tropical forest swidden gardens mimic the extraordinary species diversity of the forest by the use of extensive intercropping is examined in the light of the field architecture of the Barí, a people of the Maracaibo basin. Barí fields manifest annular zonation rather than intercropping. It is concluded that Barí horticulture is an inversion of the jungle rather than an imitation of it.
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