National Institute of Standards and Technology における超伝導研究及び生活

Normal accidents. Living with high-risk technologies

(1975). The Limits of Organization. Journal of Economic Issues: Vol. 9, No. 3, pp. 543-544.

The Limits of Organization

This article presents a review of the book “Organizations: Rational, Natural and Open Systems,” by W.R. Scott.

Organizations: Rational, Natural and Open Systems

accademiche [38]. Ada [45]. Adrian [45]. African [56]. Age [39, 49, 61]. Al [23]. Al-Rawi [23]. Aldous [68]. Alex [15]. Allure [46]. America [60, 66]. American [49, 69, 61, 52]. ancienne [25]. Andreas [28]. Angela [42]. Animals [16]. Ann [26]. Anna [19, 47]. Annotated [46]. Annotations [28]. Anti [37]. Anti-Copernican [37]. Antibiotic [64]. Anxiety [51]. Apocalyptic [61]. Archaeology [26]. Ark [36]. Artisan [32]. Asylum [48]. Atri [54]. Audra [65]. Australia [41]. Authorship [15]. Axelle [29].

/pdf/a-complete-bibliography-of-publications-in-isis-2000-2009-1nklqbzyfs.pdf

A Complete Bibliography of Publications in Isis, 2000{2009

Polymerization of aqueous silica in H2O-K2O solutions at 25-200°C and 1bar to 20kbar

: Unmanned aerial vehicles (UAVs) have been used in combat operations since the mid-1900s (Office of the Secretary of Defense, 2002). More recently, both Operations Enduring Freedom and Iraqi Freedom have employed UAVs for intelligence, surveillance, and reconnaissance, as well as time-critical targeting. These successes have confirmed the military utility of UAVs and portend that a greater number of such vehicles may become part of the DoD's future force posture. However, because of the acquisition strategy employed to field UAVs as quickly as possible, the implications for their long-term support needs are unclear.

/pdf/unmanned-aerial-vehicle-end-to-end-support-considerations-52t5vh2qbs.pdf

Unmanned Aerial Vehicle End-to-End Support Considerations

: The governance structure for cybersecurity defined by the laws and policies at the federal, DoD, and Air Force levels is voluminous and complicated. Even summarizing this body of oversight would require a document of considerable length. We do not attempt a comprehensive review, but instead describe this governance structure in light of the principal issues raised in Chapter One. We first highlight key facets of legislation and federal and DoD policy, including some relevant history, to identify the stakeholders, requirements, and constraints within which Air Force cybersecurity must operate. The second part of the chapter outlines cybersecurity practice within the Air Force, paying particular attention to roles and responsibilities and feedback. One important aspect of the laws and policies is that they change frequently relative to the duration of the life cycle of a military system. In practice, this frequent reworking of the governance structure for cybersecurity means that military systems often fall under multiple governance structures over the course of their life cycles. As we document in this chapter, cybersecurity governance has changed significantly every several years, whereas many weapon systems have service lives in the decades. Indeed, some systems predate most of the modern governance structures and, while in sustainment, have to varying degrees been managed under multiple cybersecurity frameworks. These temporal changes therefore present a challenge to assessing the success or shortcomings of laws and policies, because many of the laws and policies have not been in effect long enough to correlate with specific outcomes.

/pdf/improving-the-cybersecurity-of-u-s-air-force-military-5bcj8lfz2c.pdf

Improving the Cybersecurity of U.S. Air Force Military Systems Throughout Their Life Cycles

[1] A lava flow extruded on the surface of Venus cools by radiating heat and by advecting heat upward by thermal convection Unlike on other planetary bodies, these processes are intimately coupled on Venus because the dense CO2-rich atmosphere has strong absorption bands in the infrared Relative to a transparent atmosphere, absorption (and emission) of radiation within short distances above a lava reduces the radiant heat loss and substantially diminishes the vigor of convection by dampening the thermal gradients within the boundary layer For these reasons, lavas on Venus cool significantly more slowly (30–40%) than they would if the atmosphere were transparent in the infrared, as assumed in previous calculations Considering these effects indicates that lavas on Venus cool more slowly than their equivalents on Earth rather than more rapidly as previously estimated The reduction in cooling rate due to the suppression of convection by radiation extends our understanding of how some lavas on Venus reach extraordinary lengths, on the order of a thousand kilometers, before solidifying

https://agupubs.onlinelibrary.wiley.com/doi/pdf/10.1029/2001JE001501

Cooling of lava flows on Venus: The coupling of radiative and convective heat transfer

In the centuries that inquiring minds have studied and theorized about igneous rocks, much progress has been made, both in accumulating observations and in developing theories. Yet, writing a history of this progress is a daunting undertaking. The volume of the literature is vast and in multiple languages; the various lines of inquiry are diverse and complex; and the nomenclature is sometimes abstruse. On top of these challenges, many of its principal issues have yet to find a definitive consensus. With the exception of a few topical studies, historians of science have virtually avoided the subject.

Don Snyder

Papers

Polymerization of aqueous silica in H2O-K2O solutions at 25-200°C and 1bar to 20kbar

Unmanned Aerial Vehicle End-to-End Support Considerations

Improving the Cybersecurity of U.S. Air Force Military Systems Throughout Their Life Cycles

Cooling of lava flows on Venus: The coupling of radiative and convective heat transfer

Mind Over Magma: The Story of Igneous Petrology