28,435 research outputs found
Weighing Aims in Doxastic Deliberation
In this paper, I defend teleological theories of belief against the exclusivity objection. I argue that despite the exclusive influence of truth in doxastic deliberation, multiple epistemic aims interact when we consider what to believe. This is apparent when we focus on the processes involved in specific instances (or concrete cases) of doxastic deliberation, such that the propositions under consideration are specified. First, I out- line a general schema for weighing aims. Second, I discuss recent attempts to defend the teleological position in relation to this schema. And third, I develop and defend my proposal that multiple epistemic aims interact in doxastic deliberation—a possibility which, as of yet, has received no serious attention in the literature
The brittleness index in hydraulic fracturing
We present a new definition of a brittleness index which is used as a criterion for candidate selection of rock intervals for hydraulic fracturing. The new index is a combination of material strength parameters and insitu stresses. It was derived from an analytical model of hydraulic fracturing in weak formations of varying ductility. The model is based on Mohr-Coulomb dislocations that are placed in the effective centres of the complete slip process that is distributed around the crack tip. The new brittleness index varies between 0 and 1 with the one limit to correspond to brittle propagation and the other limit to a fracture that requires infinite energy release per unit advance. The values between 0 and 1 correspond to fracture propagation of increasing ductility from brittle to small scale and finally to large scale yielding. The results are particularly interesting for predicting the propagation of axial fractures in the horizontal direction and their confinement in the vertical direction
A Conversation with Professor Tadeusz Cali\'{n}ski
Tadeusz Cali\'{n}ski was born in Pozna\'{n}, Poland in 1928. Despite the
absence of formal secondary eduction for Poles during the Second World War, he
entered the University of Pozna\'{n} in 1948, initially studying agronomy and
in later years mathematics. From 1953 to 1988 he taught statistics, biometry
and experimental design at the Agricultural University of Pozna\'{n}. During
this period he founded and developed the Pozna\'{n} inter-university school of
mathematical statistics and biometry, which has become one of the most
important schools of this type in Poland and beyond. He has supervised 24 Ph.D.
students, many of whom are currently professors at a variety of universities.
He is now Professor Emeritus. Among many awards, in 1995 Professor Cali\'{n}ski
received the Order of Polonia Restituta for his outstanding achievements in the
fields of Education and Science. In 2012 the Polish Statistical Society awarded
him The Jerzy Sp{\l}awa-Neyman Medal for his contribution to the development of
research in statistics in Poland. Professor Cali\'{n}ski in addition has
Doctoral Degrees honoris causa from the Agricultural University of Pozna\'{n}
and the Warsaw University of Life Sciences. His research interests include
mathematical statistics and biometry, with applications to agriculture, natural
sciences, biology and genetics. He has published over 140 articles in
scientific journals as well as, with Sanpei Kageyama, two important books on
the randomization approach to the design and analysis of experiments. He has
been extremely active and successful in initiating and contributing to fruitful
international research cooperation between Polish statisticians and
biometricians and their colleagues in various countries, particularly in the
Netherlands, France, Italy, Great Britain, Germany, Japan and Portugal. The
conversations in addition cover the history of biometry and experimental design
in Poland and the early influence of British statisticians.Comment: Published at http://dx.doi.org/10.1214/15-STS522 in the Statistical
Science (http://www.imstat.org/sts/) by the Institute of Mathematical
Statistics (http://www.imstat.org
Triplanar Model for the Gap and Penetration Depth in YBCO
YBaCuO_7 is a trilayer material with a unit cell consisting of a CuO_2
bilayer with a CuO plane of chains in between. Starting with a model of
isolated planes coupled through a transverse matrix element, we consider the
possibility of intra as well as interplane pairing within a nearly
antiferromagnetic Fermi liquid model. Solutions of a set of three coupled BCS
equations for the gap exhibit orthorhombic symmetry with s- as well as d-wave
contributions. The temperature dependence and a-b in plane anisotropy of the
resulting penetration depth is discussed and compared with experiment.Comment: To appear in Physical Review B1 01Mar97; 12 pages with 10 figures;
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Adapting structuration theory to understand the role of reflexivity: Problematization, clinical audit and information systems
This paper is an exploratory account of the further development and application of a hybrid framework,
StructurANTion, that is based on Structuration Theory and Actor Network Theory (ANT). The use of social
theories in general and their use in information systems (IS) research in particular is explored leading to
the use of the framework to examine the concept of what are termed humanchine networks in the context
of clinical audit, within a healthcare Primary Care Trust (PCT). A particular focus is on the manner in which
information systems-based reflexivity contributes to both entrenching a networks’ structurated order as
well as contributing to its emancipatory change. The case study compares clinic-centric and patientcentric
audit and seeks to further extend the understanding of the role of information and information
systems within structurated humanchine activity systems. Conclusions indicate that the use of more
socially informed IS methods and approaches can incorporate more emancipatory ideals and lead to
greater adoption and usage of more relevant and useful clinical information systems and practices
A case study of MMO2's Madic: A framework for creating mobile internet systems
Mobile Internet applications on ubiquitous mobile networks allows real-time, anywhere, anytime connectivity to services. Due to its scalability and potential cost savings, mobile communication is being increasingly applied in the business and consumer communities to create innovative data and voice application, which run over the Internet infrastructure. This paper reports on a case study at an organisation that created an innovative approach to developing mobile applications developed by third party independent developers. A conceptual wireless reference model is presented that was used to define the various system components required to create effective mobile applications
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