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The U.S. electric power sector has experienced a substantial shift of the generation mix since the turn of the century, moving from heavy reliance on coal‐powered generation to one drawing more from natural gas and, more recently, renewables. This transition has been forged by a mix of macroeconomic factors (recession and recovery); technological breakthroughs (horizontal drilling coupled with hydraulic fracturing; improvements in natural gas plant efficiency); clean energy policies at federal, state, and local levels of government; and private sector demands for carbon‐free energy sources. These factors have combined to reduce carbon emissions from electric power generation substantially this century. In this article we examine the extent of this transition, its causes, as well as the distinct American institutional factors steering it, including energy and environmental federalism, electoral politics, and the political economy of clean energy policy enactment and resistance. 相似文献
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It appeared that as 1977 dawned, the political climate in the United States might render multi-billion dollar arms sales into unstable regions a thing of the past. Jimmy Carter triumphed in the presidential election of November 1976 on a popular platform of arms control and the introduction of human rights considerations into American foreign policy. His transition from that idealistic candidate to the president who agreed to sell Iran a fleet of highly advanced AWACS aircraft, as part of a record breaking $5.7 billion arms package, is therefore outwardly confusing. Yet, when examining the entrenched policy path that Carter inherited regarding arming Iran, and the larger needs of Cold War containment, the logic of Carter’s decisions essentially to betray his own policies in this case becomes clear. 相似文献
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Centering labor in the land grab debate 总被引:1,自引:0,他引:1
Tania Murray Li 《The Journal of peasant studies》2013,40(2):281-298
Placing labor at the center of the global ‘land-grab’ debate helps sharpen critical insights at two scales. At the scale of agricultural enterprises, a labor perspective highlights the jobs generated, and the rewards received, by people who work in and around large farms. This approach guides my critical reading of the report prepared by a World Bank team that argues for large-scale land acquisition as a way to reduce poverty. Using data from within the report itself, I show why poverty reduction is a very unlikely result. I develop the argument further by drawing on research in colonial and contemporary Indonesia, where large-scale plantations and associated smallholder contract schemes have a long history. A labor perspective is also relevant at the national and transnational scale, where it highlights the predicament of people whose labor is not needed by the global capitalist system. In much of the global South, the anticipated transition from the farm to factory has not taken place and education offers no solution, as vast numbers of educated people are unemployed. Unless vast numbers of jobs are created, or a global basic income grant is devised to redistribute the wealth generated in highly productive but labor-displacing ventures, any program that robs rural people of their foothold on the land must be firmly rejected. 相似文献
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Murray Weidenbaum 《Society》1989,27(1):49-56
His most recent books include the third edition of Business, Government, and the Public, The Future of Business Regulation,and Public Policy Toward Corporate Takeovers. 相似文献
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Validation of a 21-locus autosomal SNP multiplex for forensic identification purposes 总被引:8,自引:0,他引:8
Dixon LA Murray CM Archer EJ Dobbins AE Koumi P Gill P 《Forensic science international》2005,154(1):62-77
A single nucleotide polymorphism (SNP) multiplex has been developed to analyse highly degraded and low copy number (LCN) DNA template, i.e. <100 pg, for scenarios including mass disaster identification. The multiplex consists of 20 autosomal non-coding loci plus Amelogenin for sex determination, amplified in a single tube PCR reaction and visualised on the Applied Biosystems 3100 capillary electrophoresis (CE) system. Allele-specific primers tailed with shared universal tag sequences were designed to speed multiplex design and balance the amplification efficiencies of all loci through the use of a single reverse and two differentially labelled allele denoting forward universal primers. As the multiplex is intended for use with samples too degraded for conventional profiling, a computer program was specifically developed to aid interpretation. Critical factors taken into account by the software include empirically determined extremes of heterozygous imbalance (Hb) and the drop-out threshold (Ht) defined as the maximum peak height of a surviving heterozygous allele, where its partner may have dropped out. The discrimination power of the system is estimated at 1 in 4.5 million, using a White Caucasian population database. Comparisons using artificially degraded samples profiled with both the SNP multiplex and AMPFISTR SGM plus (Applied Biosystems) demonstrated a greater likelihood of obtaining a profile using SNPs for certain sample types. Saliva stains degraded for 147 days generated an 81% complete SNP profile whilst short tandem repeats (STRs) were only 18% complete; similarly blood degraded for 243 days produced full SNP profiles but only 9% with STRs. Reproducibility studies showed concordance between SNP profiles for different sample types, such as blood, saliva, semen and hairs, for the same individual, both within and between different DNA extracts. 相似文献