The Extended Knowledge Management Adoption Model.

Knowledge Management (KM) adoption theory, research and practice appears to have its primary foundations in generic organisational change theory. Recent research into KM adoption by individuals indicates diffusion of innovation theory may better explain individual adoption. This paper presents the Extended KM Adoption (EKMA) model and proposed research to test and further develop this model. The EKMA is a research framework which recognises the changing dynamics at play across four phases in the lifecycle of KM adoption by organisations. The EKMA model builds on research into the factors that influence the volitional adoption by individuals of KM

ENVIRONMENTALLY SUSTAINABLE ICT: DEVELOPING CORPORATE CAPABILITIES AND AN INDUSTRY-RELEVANT IS RESEARCH AGENDA

Information and Communication Technologies (ICT) have made significant contributions to business innovation and wealth generation for organisations, societies and nations. ICT have also made significant contributions to environmental degradation. Confronted by the necessity to respond to growing environmental concerns in society, regulatory imperatives and market pressure, many executives express uncertainty about how best to proceed. IS researchers have investigated diverse aspects of ICT applications and practices in organizations over the last 30 years but IS research literature, to date, has provided little assistance to those organizations unsure about how, where and when to respond to imperatives for their ICT applications and practices to become \u27Green\u27. This paper aims to facilitate the development of corporate practice in the environmental sustainability of ICT and to promote an industry-relevant Information Systems research agenda. Its contributions are: an overview of the topic from a diversity of literature sources; proposal of a stages of development framework for corporate capabilities in ICT environmental sustainability based on the literature and on the experiences of a global ICT services corporation recognised as a leader in its environmental sustainability activities; and proposal of an industry-relevant IS research agenda. Implications of the framework for corporate practice and for IS research are discussed

A Framework for Identifying the Intangible Capital Value of ICT Investments.

Adequately considering the intangible value of Information and Communication Technology (ICT) investments has been problematic for as long as organisations have been making ICT investment decisions. This paper presents a framework for considering the intangible capital value of ICT investments. The framework applies the tripartite model of intangible resources, as proposed by the Australian Society of Knowledge Economics. The development of the framework was commissioned by the Australian Government Information Management Office (AGIMO) to inform the Australian government’s Business Case Initiative process and its ICT Investment Framework. The concepts, models and frameworks presented in this paper provide a fresh approach to IT investment strategy and governance by supporting the consideration of the intangible capital value of one ICT investment vs another when making ICT investment decisions. In addition to taking a systems perspective they are grounded in emerging best practice concerning the consideration of intangible capital value as adopted by the accounting profession and academia

Formation of Kuiper Belt Binaries by Gravitational Collapse

A large fraction of 100-km-class low-inclination objects in the classical Kuiper Belt (KB) are binaries with comparable mass and wide separation of components. A favored model for their formation was capture during the coagulation growth of bodies in the early KB. Instead, recent studies suggested that large objects can rapidly form in the protoplanetary disks when swarms of locally concentrated solids collapse under their own gravity. Here we examine the possibility that KB binaries formed during gravitational collapse when the excess of angular momentum prevented the agglomeration of available mass into a solitary object. We find that this new mechanism provides a robust path toward the formation of KB binaries with observed properties, and can explain wide systems such as 2001 QW322 and multiples such as (47171) 1999 TC36. Notably, the gravitational collapse is capable of producing 100% binary fraction for a wide range of the swarm's initial angular momentum values. The binary components have similar masses (80% have the secondary-over-primary radius ratio >0.7) and their separation ranges from ~1,000 to ~100,000 km. The binary orbits have eccentricities from e=0 to ~1, with the majority having e<0.6. The binary orbit inclinations with respect to the initial angular momentum of the swarm range from i=0 to ~90 deg, with most cases having i<50 deg. Our binary formation mechanism implies that the primary and secondary components in each binary pair should have identical bulk composition, which is consistent with the current photometric data. We discuss the applicability of our results to the Pluto-Charon, Orcus-Vanth, (617) Patroclus-Menoetius and (90) Antiope binary systems.Comment: Astronomical Journal, in pres

Ultra-Compact Dwarfs in the Coma Cluster

We have undertaken a spectroscopic search for ultra compact dwarf galaxies (UCDs) in the dense core of the dynamically evolved, massive Coma cluster as part of the HST/ACS Coma Cluster Treasury Survey. UCD candidates were initially chosen based on color, magnitude, degree of resolution within the ACS images, and the known properties of Fornax and Virgo UCDs. Follow-up spectroscopy with Keck/LRIS confirmed 27 candidates as members of the Coma Cluster, a success rate > 60% for targeted objects brighter than M_R = -12. Another 14 candidates may also prove to be Coma members, but low signal-to-noise spectra prevent definitive conclusions. An investigation of the properties and distribution of the Coma UCDs finds these objects to be very similar to UCDs discovered in other environments. The Coma UCDs tend to be clustered around giant galaxies in the cluster core and have colors/metallicity that correlate with the host galaxy. With properties and a distribution similar to that of the Coma cluster globular cluster population, we find strong support for a star cluster origin for the majority of the Coma UCDs. However, a few UCDs appear to have stellar population or structural properties which differentiate them from the old star cluster populations found in the Coma cluster, perhaps indicating that UCDs may form through multiple formation channels.Comment: 40 pages, 23 figures, accepted for publication in Ap

The JCMT BISTRO Survey: The Magnetic Field Strength in the Orion A Filament

We determine the magnetic field strength in the OMC 1 region of the Orion A filament via a new implementation of the Chandrasekhar-Fermi method using observations performed as part of the James Clerk Maxwell Telescope (JCMT) B-Fields In Star-Forming Region Observations (BISTRO) survey with the POL-2 instrument. We combine BISTRO data with archival SCUBA-2 and HARP observations to find a plane-of-sky magnetic field strength in OMC 1 of B_pos=6.6±4.7 mG, where δB_pos=4.7 mG represents a predominantly systematic uncertainty. We develop a new method for measuring angular dispersion, analogous to unsharp masking. We find a magnetic energy density of ~1.7×10^-7 Jm^-3 in OMC 1, comparable both to the gravitational potential energy density of OMC 1 (~10^-7 Jm^-3), and to the energy density in the Orion BN/KL outflow (~10^-7 Jm^-3). We find that neither the Alfvén velocity in OMC 1 nor the velocity of the super-Alfvénic outflow ejecta is sufficiently large for the BN/KL outflow to have caused large-scale distortion of the local magnetic field in the ~500-year lifetime of the outflow. Hence, we propose that the hour-glass field morphology in OMC 1 is caused by the distortion of a primordial cylindrically-symmetric magnetic field by the gravitational fragmentation of the filament and/or the gravitational interaction of the BN/KL and S clumps. We find that OMC 1 is currently in or near magnetically-supported equilibrium, and that the current large-scale morphology of the BN/KL outflow is regulated by the geometry of the magnetic field in OMC 1, and not vice versa

Global urban environmental change drives adaptation in white clover

Urbanization transforms environments in ways that alter biological evolution. We examined whether urban environmental change drives parallel evolution by sampling 110,019 white clover plants from 6169 populations in 160 cities globally. Plants were assayed for a Mendelian antiherbivore defense that also affects tolerance to abiotic stressors. Urban-rural gradients were associated with the evolution of clines in defense in 47% of cities throughout the world. Variation in the strength of clines was explained by environmental changes in drought stress and vegetation cover that varied among cities. Sequencing 2074 genomes from 26 cities revealed that the evolution of urban-rural clines was best explained by adaptive evolution, but the degree of parallel adaptation varied among cities. Our results demonstrate that urbanization leads to adaptation at a global scale

The Knowledge Management Spectrum - The Human Factor

13 page(s