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11.
Bernard L. Stewart 《冲突和恐怖主义研究》2013,36(3):307-313
At the end of 1997 the Israeli Defence Forces (IDF), and their proxies the South Lebanon Army (SLA), remained hopelessly bogged down in a military quagmire which is played out daily in the hills and valleys of Southern Lebanon. As each new week passed more and more Israeli and SLA soldiers fell victim to the Islamic Resistance's (IR) most effective weapon, the roadside bomb, no amount of “preventive patrolling” could manage to reduce the frequency with which these indiscriminate attacks took place, nor did it confine the planting of these devices to the perimeter of the Security Zone. Having recently completed an assignment with the United Nations Interim Force in Lebanon (UNIFIL), Brendan O'Shea, of the History Department at University College, Cork, Ireland, investigates the claims of Nabih Berri, Leader of the Shi'ite Amal Movement and Speaker of the Lebanese Parliament, that the blood‐spattered hills of South Lebanon have now become “Israel's Vietnam.“1 相似文献
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With increasing frequency, relatively small, fragmentary evidence thought to be osseous or dental tissue of human origin is submitted to the forensic laboratory for DNA analysis with the request for positive identification. Prior to performing DNA analysis, however, it is prudent to first perform a presumptive test or "screen" to determine whether the questioned material may be eliminated from further consideration. When material is shown not to be consistent with bone/teeth, DNA testing is not performed. When such determinations cannot be made from gross morphological features, elemental analysis can be indicative. This presumptive test is made possible by applying scanning electron microscopy/energy dispersive X-ray spectroscopy (SEM/EDS) in conjunction with an X-ray spectral database recently developed by the FBI laboratory. This database includes spectra for many different materials including known examples of bone and tooth from many different contexts and representing the full range of taphonomic conditions. Results of SEM/EDS analysis of evidence can be compared to these standards to determine if they are consistent with bone and/or tooth and, if not, then what the material might represent. Analysis suggests that although the proportions and amounts of calcium and phosphorus are particularly important in differentiating bone and tooth from other materials, other minor differences in spectral profile can also provide significant discrimination. Analysis enables bone and tooth to be successfully distinguished from other materials in most cases. Exceptions appear to be ivory, mineral apatite, and perhaps some types of corals. 相似文献
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Jenny Stewart 《政策研究评论》2006,23(1):183-195
The analysis of policy change has produced a number of contrasting theoretical approaches, each offering a lens through which to view policy phenomena. This article suggests that the existing menu of approaches for understanding change can be usefully complemented by an understanding of the role played by value conflict. Using institutionalist analysis, I argue that the need to make value‐choices in a nondisruptive way shapes large areas of government activity, particularly in Westminster systems, and explains many observed patterns of stability and change. Building on work by Thacher and Rein, I describe and characterize six types of response to value conflict, giving examples of the role and implications of each. It is not claimed that all policy change can be understood in this way—simply that some types of change reflect the value‐based nature of public policy itself, and the fact that political and bureaucratic systems must evolve mechanisms for dealing simultaneously with thousands of competing and conflicting policy values. 相似文献
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Privately sold bond insurance is the most common form of credit enhancement for municipal bonds. Research generally finds that bond insurance reduces interest costs for lower rated, long–term debt issues. Researchers have concluded that these results are consistent with presumed investor risk aversion, as well as more "rational" risk management behaviors, and with theories concerning the efficiency–enhancing properties of financial intermediation in imperfect markets. We propose a research agenda based both on traditional theories and on additional hypotheses that seek to account for the observed use of bond insurance where net savings would not normally be predicted. 相似文献