Quasi-Projection: Aperiodic concrete formwork for perceived surface complexity (2009)
Aperiodic tiling patterns result in endlessly varied local configurations of a limited set of basic polygons, and as such may be used to economically produce non-repeating, complex forms from a...
Spectral comparison of large urban graphs (2009)
The spectrum of an axial graph is proposed as a means for comparison between spaces, particularly for measuring between very large and complex graphs. A number of methods have been used in recent...
Cities as emergent models: the morphological logic of Manhattan and Barcelona (2009)
Al Sayed, K., Turner, A., Hanna, S.
This paper is set to unveil several particulars about the logic embedded in the diachronic model of city growth and the rules which govern the emergence of urban spaces. The paper outlines an attempt...
Emergent Form from Structural Optimisation of the Voronoi Polyhedra Structure (2008)
E. Friedrich, C. Derix, S. Hanna
e-mail:
Laskari, S., Hanna, S., Derix, C.
This analysis investigates whether and to what degree quantifiable spatial attrib-utes, as expressed in plan representations, can capture elements related to the ex-perience of spatial identity. By...
Email Alerting, S M Tibby, D Taylor, M Festa, S Hanna, M Hatherill, ...
service
The problem of filling a given volume with a 3-dimensional structural network lattice comprising a certain number of nodes is considered. The proposed method of approach is contained within the...
Emergent Form from Structural Optimisation of the Voronoi Polyhedra Structure (2007)
Friedrich, E., Hanna, S., Derix, C.
In the course of the exploration of computational means in the architectural design process, in order to investigate more complex, adaptive geometries, the Voronoi diagram has recently gained some...
A parametric representation of ruled surfaces (2007)
This paper proposes a simple parametric system to generate an almost complete set of ruled surfaces that may be used to describe building geometry. The major classes of regular, named ruled surfaces...
Structural optimization is usually handled by iterative methods requiring repeated samples of a physics-based model, but this process can be computationally demanding. Given a set of previously...
Style is a broad term that could potentially refer to any features of a work, as well as a fluid concept that is subject to change and disagreement, yet approaches to representing it too often seek...
Representation and generation of plans using graph spectra (2007)
Numerical comparison of spaces with one another is often achieved with set scalar measures such as global and local integration, connectivity, etc., which capture a particular quality of the space...
Representation and generation of plans using graph spectra (2007)
Numerical comparison of spaces with one another is often achieved with set scalarmeasures such as global and local integration, connectivity, etc., which capture aparticular quality of the space but...
Defining implicit objective functions for design problems (2007)
In many design tasks it is difficult to explicitly define an objective function. This paper uses machine learning to derive an objective in a feature space based on selected examples of previous...
Representation and generation of plans using graph spectra (2007)
Numerical comparison of spaces with one another is often achieved with set scalar measures such as global and local integration, connectivity, etc., which capture a particular quality of the space...
Style is a broad term that could potentially refer to any features of a work, as well as a fluid concept that is subject to change and disagreement, yet approaches to representing it too often seek...
Structural optimization is usually handled by iterative methods requiring repeated samples of a physics-based model, but this process can be computationally demanding. Given a set of previously...
Style is a broad term that could potentially refer to any features of a work, as well as a fluid concept that is subject to change and disagreement. A similarly flexible method of representing style...
A support vector machine is trained to produce optimal structures. The problem of structural optimization is typically solved by a search procedure that samples and repeatedly evaluates a...
Where creativity comes from: the social spaces of embodied minds (2005)
This paper explores creative design, social interaction and perception. It proposes that creativity at a social level is not a result of many individuals trying to be creative at a personal level,...
The aim of this work is to investigate whether stereolithographic models, combined with shape memory alloys, can be used to create robotic structures that act both as support structure and actuator....
In this paper, we introduce a technique by which the internal material properties of an object can be optimised at a microstructural level (5x10-5m) to counteract the forces that are applied to it....
Optimising continuous microstructures: a comparison of gradient-based and stochastic methods (2004)
This work compares the use of a deterministic gradient based search with a stochastic genetic algorithm to optimise the geometry of a space frame structure. The goal is not necessarily to find a...
Optical properties of InAs/GaAs structures with doped quantum dot and artificial molecules (2004)
Firsov, D.A., Vorobjev, L.E., Panevin, V.Y., Fedosov, N.K., Shalygin, V.A., Andreev, A., ...
An evolutionary approach to microstructure optimisation of stereolithographic models (2003)
The aim of this work is to utilize an evolutionary algorithm to evolve the microstructure of an object created by a stereolithography machine. This should be optimised to be able to withstand loads...
Physics and technology of the Next Linear Collider (2000)
Kuhlman, S, Adolphsen, C E, Aiello, R, Akemoto, M, Alley, R, Assmann, R W, ...
We present the current expectations for the design and physics program of an e+e- linear collider of center of mass energy 500 GeV -- 1 TeV. We review the experiments that would be carried out at...
(n,p) Studies at 120 MeV (1983)
Rapaport, J., Taddeucci, T.N., Welch, T.P., Brady, P., Romero, J., Castaneda, C., ...
This research was sponsored by the National Science Foundation Grant NSF PHY 87-14406
ELECTRONIC RELAXATION IN RARE EARTH METALS AND ALLOYS - A NON-KRAMERS EXAMPLE : Tm3+ (1980)
Dixon, N., Fritz, L., Mahmud, Y., Triplett, B., Hanna, S., Von Eynatten, G.
Electronic relaxation in rare earth materials has been a subject of considerable interest in recent years. Several metallic thulium compounds, Tm, TmAl, TmCu, and TmxY1-xCu, were studied using...
Langouche, G., Dixon, N., Gettner, L., Hanna, S.
The recoil implantation experiments of Latshaw (1) had an important influence on the later Mössbauer work on implanted atoms in semiconductors (2,3). It was believed that the observed doublet, with...
ELECTRONIC RELAXATION IN RARE EARTH METALS AND ALLOYS - A NON-KRAMERS EXAMPLE : Tm3+ (1980)
Dixon, N., Fritz, L., Mahmud, Y., Triplett, B., Hanna, S., Von Eynatten, G.
Electronic relaxation in rare earth materials has been a subject of considerable interest in recent years. Several metallic thulium compounds, Tm, TmAl, TmCu, and TmxY1-xCu, were studied using...
Langouche, G., Dixon, N., Gettner, L., Hanna, S.
The recoil implantation experiments of Latshaw (1) had an important influence on the later Mössbauer work on implanted atoms in semiconductors (2,3). It was believed that the observed doublet, with...
ELECTRONIC RELAXATION IN RARE EARTH METALS AND ALLOYS - A NON-KRAMERS EXAMPLE : Tm3+ (1980)
Dixon, N., Fritz, L., Mahmud, Y., Triplett, B., Hanna, S., Von Eynatten, G.
Electronic relaxation in rare earth materials has been a subject of considerable interest in recent years. Several metallic thulium compounds, Tm, TmAl, TmCu, and TmxY1-xCu, were studied using...
Langouche, G., Dixon, N., Gettner, L., Hanna, S.
The recoil implantation experiments of Latshaw (1) had an important influence on the later Mössbauer work on implanted atoms in semiconductors (2,3). It was believed that the observed doublet, with...
NUCLEAR ORIENTATION EFFECTS IN THE MÖSSBAUER SPECTRUM OF 125Te IN Pd2MnSb (1976)
Langouche, G., Triplett, B., Dixon, N., Hanna, S., Boolchand, P.
A source of 125Sb in Pd2MnSb was cooled down to 139 mK and the 125Te Mössbauer spectrum was recorded. From the asymmetry observed in this spectrum, a positive sign was established for the magnetic...
NUCLEAR ORIENTATION EFFECTS IN THE MÖSSBAUER SPECTRUM OF 125Te IN Pd2MnSb (1976)
Langouche, G., Triplett, B., Dixon, N., Hanna, S., Boolchand, P.
A source of 125Sb in Pd2MnSb was cooled down to 139 mK and the 125Te Mössbauer spectrum was recorded. From the asymmetry observed in this spectrum, a positive sign was established for the magnetic...
NUCLEAR ORIENTATION EFFECTS IN THE MÖSSBAUER SPECTRUM OF 125Te IN Pd2MnSb (1976)
Langouche, G., Triplett, B., Dixon, N., Hanna, S., Boolchand, P.
A source of 125Sb in Pd2MnSb was cooled down to 139 mK and the 125Te Mössbauer spectrum was recorded. From the asymmetry observed in this spectrum, a positive sign was established for the magnetic...
LOW TEMPERATURE MÖSSBAUER STUDIES OF THULIUM COMPOUNDS (1974)
Triplett, B., Dixon, N., Boolchand, P., Hanna, S., Bucher, E.
We discuss studies of TmVO4, TmF2, TmF3 and TmSe utilizing the 8.4 keV Mössbauer resonance in 169Tm. The studies cover a temperature range from 0.050 K to 365 K and Mössbauer information is derived...
MÖSSBAUER EFFECT STUDIES OF Te COMPOUNDS (1974)
Mahmud, Y., Boolchand, P., Hanna, S., Triplett, B.
Isomer shifts (IS) and quadrupole splittings (QS) are reported for a number of Te compounds. When the isomer shifts for Te compounds are plotted against the isomer shifts for similar I compounds a...
MÖSSBAUER STUDIES ON AMORPHOUS GexTe1-x (1974)
Boolchand, P., Triplett, B., Hanna, S., De Neufville, J.
No abstract available
TEMPERATURE DEPENDENCE OF THE 6.2 keV MÖSSBAUER RESONANCE OF 181Ta AT LOW TEMPERATURE (1974)
Salomon, D., Triplett, B., Dixon, N., Boolchand, P., Hanna, S.
The temperature dependence of the 6.2 keV Mössbauer resonance of 181Ta is reported for sources of 181W([MATH]) and 181W([MATH]). The measurements cover the temperature range from 15 K to 457 K. For...
LOW TEMPERATURE MÖSSBAUER STUDIES OF THULIUM COMPOUNDS (1974)
Triplett, B., Dixon, N., Boolchand, P., Hanna, S., Bucher, E.
We discuss studies of TmVO4, TmF2, TmF3 and TmSe utilizing the 8.4 keV Mössbauer resonance in 169Tm. The studies cover a temperature range from 0.050 K to 365 K and Mössbauer information is derived...
MÖSSBAUER EFFECT STUDIES OF Te COMPOUNDS (1974)
Mahmud, Y., Boolchand, P., Hanna, S., Triplett, B.
Isomer shifts (IS) and quadrupole splittings (QS) are reported for a number of Te compounds. When the isomer shifts for Te compounds are plotted against the isomer shifts for similar I compounds a...
MÖSSBAUER STUDIES ON AMORPHOUS GexTe1-x (1974)
Boolchand, P., Triplett, B., Hanna, S., De Neufville, J.
No abstract available
TEMPERATURE DEPENDENCE OF THE 6.2 keV MÖSSBAUER RESONANCE OF 181Ta AT LOW TEMPERATURE (1974)
Salomon, D., Triplett, B., Dixon, N., Boolchand, P., Hanna, S.
The temperature dependence of the 6.2 keV Mössbauer resonance of 181Ta is reported for sources of 181W([MATH]) and 181W([MATH]). The measurements cover the temperature range from 15 K to 457 K. For...
LOW TEMPERATURE MÖSSBAUER STUDIES OF THULIUM COMPOUNDS (1974)
Triplett, B., Dixon, N., Boolchand, P., Hanna, S., Bucher, E.
We discuss studies of TmVO4, TmF2, TmF3 and TmSe utilizing the 8.4 keV Mössbauer resonance in 169Tm. The studies cover a temperature range from 0.050 K to 365 K and Mössbauer information is derived...
MÖSSBAUER EFFECT STUDIES OF Te COMPOUNDS (1974)
Mahmud, Y., Boolchand, P., Hanna, S., Triplett, B.
Isomer shifts (IS) and quadrupole splittings (QS) are reported for a number of Te compounds. When the isomer shifts for Te compounds are plotted against the isomer shifts for similar I compounds a...
MÖSSBAUER STUDIES ON AMORPHOUS GexTe1-x (1974)
Boolchand, P., Triplett, B., Hanna, S., De Neufville, J.
No abstract available
TEMPERATURE DEPENDENCE OF THE 6.2 keV MÖSSBAUER RESONANCE OF 181Ta AT LOW TEMPERATURE (1974)
Salomon, D., Triplett, B., Dixon, N., Boolchand, P., Hanna, S.
The temperature dependence of the 6.2 keV Mössbauer resonance of 181Ta is reported for sources of 181W([MATH]) and 181W([MATH]). The measurements cover the temperature range from 15 K to 457 K. For...
Hypoalbuminaemia in critically ill children: incidence, prognosis, and influence on the anion gap
Durward, A, Mayer, A, Skellett, S, Taylor, D, Hanna, S, Tibby, S, ...
Aims: Hypoalbuminaemia has significance in adult critical illness as an independent predictor of mortality. In addition, the anion gap is predominantly due to the negative charge of albumin, thus...
A comparison of three scoring systems for mortality risk among retrieved intensive care patients
Tibby, S, Taylor, D, Festa, M, Hanna, S, Hatherill, M, Jones, G, ...
Aims: To assess the impact of two paediatric intensive care unit retrieval teams on the performance of three mortality risk scoring systems: pre-ICU PRISM, PIM, and PRISM II.