Energetic and magnetosheath energy particle signatures of the low-latitude boundary layer at low altitudes near noon

The low-latitude boundary layer (LBL) and its separation from the cusp have previously been identified using observations of particle precipitation at magnetosheath energies. Using S3-3 satellite observations, we have determined that these identifications can also be made from energetic particle observations on polar-orbiting satellites. It is found that the equatorward boundary of the LBL is identifiable as an approximately discontinuous decrease in 33-keV electron fluxes from low to high latitudes. Both the energetic ion and electron fluxes decrease discontinuously at the boundary between the LBL and the cusp or polar cap. A distinct LBL is nearly always identifiable in energetic particle measurements in the 10-14 MLT region when counting rates are statistically significant. The identifications obtained using the energetic particle measurements have been compared to those obtained using criteria developed by Newell and Meng (1988, 1989) for magnetosheath energy particle precipitation. In this way, we have evaluated the accuracy of both techniques and used the energetic particle measurements to supplement the identifications obtained using the Newell and Meng criteria. We propose that the Newell and Meng threshold on ion energy flux can be reduced by a factor of 6. This modification provides identification of the LBL for lower ion intensity levels than has previously been thought possible. Source, acceleration, and scattering processes have also been studied within and in the vicinity of the LBL. Observed trapped pitch angle distributions of energetic electrons imply that the LBL is at least partially on closed field lines. Strong scattering of energetic protons is found within and equatorward of the LBL and thus must occur at least partially along closed field lines. Field-aligned electron acceleration by parallel electric fields can be discerned within and poleward of the LBL, but a more detailed analysis is necessary for a statistical study. Conical ion acceleration was seen relatively frequently within the LBL and about half as often poleward of the LBL. Neither acceleration process could be identified anywhere equatorward of the LBL

Effective Knowledge Management (KM) strategy within a business organization

A cohesive Knowledge Management (KM) strategy is found at the cornerstone of every successful business enterprise\u27s overall business strategy. The full benefit of this strategy can only be achieved through a dynamic, technology-enabled framework that encourages best and better practices to capture the outputs of human innovation and creative knowledge. Competitive pressures and technological convergence, most prevalent in high technology business sectors, have demonstrated the critical need for an information strategy that can harness and discern the continual amass of intellectual property. The continual accumulation of information and knowledge critical to the sustained viability of many business organizations, presents significant and complex management challenges. The dynamic changes in economic conditions and technical innovation and advance, coupled with the need to manage the outputs of human innovation and creative capacity, continues to present a paradigm shift from the traditional management approaches to more adaptive, dynamic, non-traditional management approaches and technology solutions. A major KM challenge many organizations continue to face is no longer just how to capture and manage their intellectual property, but how to identify and discern between true intellectual content and simple information, the real knowledge of their business. A successful KM strategy becomes synonymous with the overall business strategy, and includes the requirement for a process model that provides a framework that can be adapted to an ever-changing business model. This framework must provide the ability to identify and discern between static data or information and dynamic intellectual property, which the latter is often the direct output of human creativity and innovation.1 Accordingly, one important aspect of KM as a practice is the development of knowledge transfer systems. However, the one-size-fits-all approach to the technical solution is only part of the success equation.2 The other critical element in the equation is the approach to integrate it into the related business process framework. The means of specific process improvement may vary based on business requirements and scope of technical solution, but the underlying basis of need for change or improvement remains a constant. A foundational framework for business process strategy and execution takes on much greater significance as part of the overall business strategy. Thomas A. Stewart, a member of the board of editors at Fortune Magazine, says Because knowledge has become the single most important factor of production, managing intellectual assets has become the single most important task of business. This paper will focus on the discipline of knowledge management and associated knowledge transfer practices in a pragmatic context to illustrate its importance as an integral component of a successful business strategy. This includes the perspectives of both as strategic asset in the management of intellectual capital, and as an enabling technology to leverage the intellectual capital for business fulfillment. The assertions and discussions put forth, while centered on knowledge management, can be paralleled for several IT-centric business disciplines. However, the analysis of the research and case studies referenced in this paper will illustrate the growing breadth and importance of knowledge assets as the primary cornerstone in a broad spectrum of business disciplines. More importantly, it will clearly demonstrate the critical need to effectively manage and control knowledge assets for competitive advantage as part of the overall business strategy. 1 Yogesh Malhotra, Knowledge Management for E-business Performance: Advancing Information Strategy to Internet Time ; Information Strategy, The Executive\u27s Journal. Summer 2000, vol. 16 (4), pp. 5-16 2 James Conlan, Improving Business Processes , KMWorld, November/December 2001, pp. S13

A Method to Estimate the Probability That Any Individual Lightning Stroke Contacted the Surface Within Any Radius of Any Point

A technique has been developed to calculate the probability that any nearby lightning stroke is within any radius of any point of interest. In practice, this provides the probability that a nearby lightning stroke was within a key distance of a facility, rather than the error ellipses centered on the stroke. This process takes the current bivariate Gaussian distribution of probability density provided by the current lightning location error ellipse for the most likely location of a lightning stroke and integrates it to get the probability that the stroke is inside any specified radius. This new facility-centric technique will be much more useful to the space launch customers and may supersede the lightning error ellipse approach discussed in [5], [6]

Condition-specific outcome measures for low back pain: Part II: Scale construction

A literature review of the most widely used, condition-specific, self-administered assessment questionnaires for low back pain has been undertaken. In part I, technical issues such as validity, reliability, availability and comparability were analyzed for the nine most widely used outcome tools. This second part focuses on the content and wording of questions and answers in each of the nine questionnaires, and an analysis of the different score results is performed. The issue of score bias is discussed and suggestions are given in order to increase the construct validity in the practical use of the individual questionnaire

Limiting Measure of Lee–Yang Zeros for the Cayley Tree

This paper is devoted to an in-depth study of the limiting measure of Lee–Yang zeroes for the Ising Model on the Cayley Tree. We build on previous works of Müller-Hartmann and Zittartz (Z Phys B 22:59, 1975), Müller-Hartmann (Z Phys B 27:161–168, 1977), Barata and Marchetti (J Stat Phys 88:231–268, 1997) and Barata and Goldbaum (J Stat Phys 103:857–891, 2001), to determine the support of the limiting measure, prove that the limiting measure is not absolutely continuous with respect to Lebesgue measure, and determine the pointwise dimension of the measure at Lebesgue a.e. point on the unit circle and every temperature. The latter is related to the critical exponents for the phase transitions in the model as one crosses the unit circle at Lebesgue a.e. point, providing a global version of the “phase transition of continuous order” discovered by Müller-Hartmann–Zittartz. The key techniques are from dynamical systems because there is an explicit formula for the Lee–Yang zeros of the finite Cayley Tree of level n in terms of the n-th iterate of an expanding Blaschke Product. A subtlety arises because the conjugacies between Blaschke Products at different parameter values are not absolutely continuous

A Probabilistic, Facility-Centric Approach to Lightning Strike Location

A new probabilistic facility-centric approach to lightning strike location has been developed. This process uses the bivariate Gaussian distribution of probability density provided by the current lightning location error ellipse for the most likely location of a lightning stroke and integrates it to determine the probability that the stroke is inside any specified radius of any location, even if that location is not centered on or even with the location error ellipse. This technique is adapted from a method of calculating the probability of debris collision~ith spacecraft. Such a technique is important in spaceport processing activities because it allows engineers to quantify the risk of induced current damage to critical electronics due to nearby lightning strokes. This technique was tested extensively and is now in use by space launch organizations at Kennedy Space Center and Cape Canaveral Air Force Station. Future applications could include forensic meteorology