3,965,144 research outputs found
Ontology Winnowing: A Case Study on the AKT Reference Ontology
Many ontologies are built for the main purpose of representing a domain, rather than to meet the requirements of a specific application. When applications and services are deployed over an ontology, it is sometimes the case that only few parts of the ontology are queried and used. Identifying which parts of an ontology are being used could useful for realising the necessary fragments of the ontology to run the applications. Such information could be used to winnow an ontology, i.e., simplifying or shrinking the ontology to smaller, more fit for purpose sizes. This paper presents a study on the use of the AKT Reference Ontology by a number of applications and services, and investigate the possibility of using this information to winnow that ontology
Under-explicit and minimally explicit reference: Evidence from a longitudinal case study
This chapter reports on a 2 Ā½ year longitudinal case study of one Korean speaker of English, focusing on the development of her command of accessibility marking in referring to persons. The data are derived from informal, open interviews spanning the entire length of the participantās enrolment in a Bachelor of Nursing programme in New Zealand. These interviews occurred every few weeks during semester (17 in total), and were typically between 45 minutes to one hour in length. The participant reported that she used these interviews as āa kind of reflective journalā, in which she discussed her classes, interactions with classmates, tutors and others, her assignments, and other experiences in New Zealand. The events she reported are rich in references to individuals.
Using a previously reported coding scheme (Ryan, 2015), these data were analysed in relation to pragmatic felicity, particularly concerning the felicity of accessibility marking for referents of varying cognitive status in contexts of topic or focus continuity or shift. These data [yet to be analysed] provide evidence of the developmental progression of the participantās command of reference in English.
This chapter contributes substantially to the literature in several ways. In general, there has been a lack of longitudinal case studies of pragmatic development in any domain, including few ā if any ā previous longitudinal studies focusing on reference; the present analysis is therefore expected to reveal previously unreported details of the trajectory of pragmatic development in reference. The present study is also one of the few working with oral data that was generated in ways other than an elicited communication task. Finally, the study contributes to the somewhat still contentious issue of to what extent mainstream study in an English-speaking context leads to genuine language gains
Integrating case study and survey research methods: An example in information systems
The case for combining research methods generally, and more specifically that for combining qualitative and quantitative methods, is strong. Yet, research designs that extensively integrate both fieldwork (e.g. case studies) and survey research are rare. MoreĀ¬over, some journals tend tacitly to specialize by methodology thereby encouraging purity of method. The multi-method model of research while not new, has not been appreciated. In this respect it is useful to articulate and describe its usage through example. By reference to a recently completed study of IS consultant engagement success factors this paper presents an analysis of the benefits of integrating case study and survey research methods. The emphasis is on the qualitative case study method and how it can compliment more quantitative survey research. Benefits are demonstrated through specific examples from the reference study.</i
Entanglement and Symmetry: A Case Study in Superselection Rules, Reference Frames, and Beyond
This paper concentrates on a particular example of a constraint imposed by
superselection rules (SSRs): that which applies when the parties (Alice and
Bob) cannot distinguish among certain quantum objects they have. This arises
naturally in the context of ensemble quantum information processing such as in
liquid NMR. We discuss how a SSR for the symmetric group can be applied, and
show how the extractable entanglement can be calculated analytically in certain
cases, with a maximum bipartite entanglement in an ensemble of N Bell-state
pairs scaling as log(N) as N goes to infinity . We discuss the apparent
disparity with the asymptotic (N >> 1) recovery of unconstrained entanglement
for other sorts of superselection rules, and show that the disparity disappears
when the correct notion of applying the symmetric group SSR to multiple copies
is used. Next we discuss reference frames in the context of this SSR, showing
the relation to the work of von Korff and Kempe [Phys. Rev. Lett. 93, 260502
(2004)]. The action of a reference frame can be regarded as the analog of
activation in mixed-state entanglement. We also discuss the analog of
distillation: there exist states such that one copy can act as an imperfect
reference frame for another copy. Finally we present an example of a stronger
operational constraint, that operations must be non-collective as well as
symmetric. Even under this stronger constraint we nevertheless show that
Bell-nonlocality (and hence entanglement) can be demonstrated for an ensemble
of N Bell-state pairs no matter how large N is. This last work is a
generalization of that of Mermin [Phys. Rev. D 22, 356 (1980)].Comment: 16 pages, 6 figures. v2 updated version published in Phys Rev
Multiattribute preference models with reference points
In the context of multiple attribute decision making, preference models making use of reference points in an ordinal way have recently been introduced in the literature. This text proposes an axiomatic analysis of such models, with a particular emphasis on the case in which there is only one reference point. Our analysis uses a general conjoint measurement model resting on the study of traces induced on attributes by the preference relation and using conditions guaranteeing that these traces are complete. Models using reference points are shown to be a particular case of this general model. The number of reference points is linked to the number of equivalence classes distinguished by the traces. When there is only one reference point, the in- duced traces are quite rough, distinguishing at most two distinct equivalence classes. We study the relation between the model using a single reference point and other preference models proposed in the literature.
Discipline Formation in Information Management: Case Study of Scientific and Technological Information Services
Discipline formation in information management is investigated through a case study of the origi-nation and development of information services for scientific and technical information in Australia. Particular reference is made to a case of AESIS, a national geoscience, minerals and petroleum reference database coordinated by the Australian Mineral Foundation. This study pro-vided a model for consideration of similar services and their contribution to the discipline. The perspective adopted is to consider information management at operational, analytical and strate-gic levels. Political and financial influences are considered along with analysis of scope, perform-ance and quality control. Factors that influenced the creation, transitions, and abeyance of the service are examined, and some conclusions are drawn about an information management disci-pline being exemplified by such services
D-particle creation on an orientifold plane
We study the propagations of gravitational wave and D-particle on D6-brane
and orientifold 6-plane backgrounds in the M-theory framework. In the case of
orientifold plane, D-particle number is not conserved and gravitational wave
can convert into D-particle. For the simplest case, we calculate its amplitude
numerically.Comment: 10 pages + 3 eps figures, LaTeX, errors corrected and reference adde
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