MAGSAT anomaly field data of the crustal properties of Australia

Progress is reported in producing maps of Australia showing; crustal magnetic anomalies at constant elevation; bulk surface magnetization; and the geomagnetic field intensity, inclination and declination for the Australian region from global models of the geomagnetic field derived from MAGSAT data. The development of a data base management system is also considered

Multiple version management of hypothetical databases

This paper presents a Hypothetical Storage Server for an experimen­tal design database system. The storage server provides unified manage­ment of historical versions and hypothetical versions of objects in a design database. The extension of each database object is man.aged as a tree of multiple distinct representatives. One branch of the tree is designated as the primary branch, and its current representative is the primary version of the object. All other branches are considered hypothetical. A new branch in the tree is started when a new hypothetical version is derived from an existing representative. Hypothetical versions can be derived from any representative of the object, including prior versions of either the primary branch or a hypothetical branch. A branch grows when the current representative of the branch is updated. Both the primary version of the object and current versions of its hypothetical branches can be updated. Updating the primary version is equivalent to updating the object. An update to any other branch of the tree is a hypothetical update of the object. Updates to the primary version of the object must be serializable, but derivation of hypothetical versions is not subject to such a constraint. Thus only write-write conflicts are subject to constraint, and conflicting updates can always be accepted by creating new hypothetical versions

Earth resources: A continuing bibliography with indexes (issue 47)

This bibliography lists 524 reports, articles and other documents introduced into the NASA scientific and technical information system between July 1 and September 30, 1985. Emphasis is placed on the use of remote sensing and geophysical instrumentation in spacecraft and aircraft to survey and inventory natural resources and urban areas. Subject matter is grouped according to agriculture and forestry, environmental changes and cultural resources, geodesy and cartography, geology and mineral resources, hydrology and water management, data processing and distribution systems, instrumentation and sensors, and economical analysis

Maritime expressions:a corpus based exploration of maritime metaphors

This study uses a purpose-built corpus to explore the linguistic legacy of Britain’s maritime history found in the form of hundreds of specialised ‘Maritime Expressions’ (MEs), such as TAKEN ABACK, ANCHOR and ALOOF, that permeate modern English. Selecting just those expressions commencing with ’A’, it analyses 61 MEs in detail and describes the processes by which these technical expressions, from a highly specialised occupational discourse community, have made their way into modern English. The Maritime Text Corpus (MTC) comprises 8.8 million words, encompassing a range of text types and registers, selected to provide a cross-section of ‘maritime’ writing. It is analysed using WordSmith analytical software (Scott, 2010), with the 100 million-word British National Corpus (BNC) as a reference corpus. Using the MTC, a list of keywords of specific salience within the maritime discourse has been compiled and, using frequency data, concordances and collocations, these MEs are described in detail and their use and form in the MTC and the BNC is compared. The study examines the transformation from ME to figurative use in the general discourse, in terms of form and metaphoricity. MEs are classified according to their metaphorical strength and their transference from maritime usage into new registers and domains such as those of business, politics, sports and reportage etc. A revised model of metaphoricity is developed and a new category of figurative expression, the ‘resonator’, is proposed. Additionally, developing the work of Lakov and Johnson, Kovesces and others on Conceptual Metaphor Theory (CMT), a number of Maritime Conceptual Metaphors are identified and their cultural significance is discussed